316 Stainless Steel Fittings: Corrosion and Pressure Proof

316 stainless steel fittings

316 stainless steel fittings: High resistance for your installations

For your most demanding projects, opt for extreme durability with our range of 316 stainless steel fittings (marine stainless steel). Designed to resist corrosion, harsh chemicals, and high temperatures, these fittings are the ideal solution for the industrial, agricultural, or marine sectors. Unlike standard solutions, 316 stainless steel guarantees exceptional longevity even in saline or corrosive environments.

Discover a wide selection of components: nipples, elbows, tees, valves and high-precision threaded fittings . Whether you work on drinking water, fuel or industrial fluid circuits, our stainless steel fittings ensure a perfect seal and unfailing robustness. Invest in professional quality for a reliable, secure and maintenance-free installation over the long term.

Technical excellence at your fingertips: order your 316 stainless steel fittings and benefit from certified expertise!

Not sure which fitting you need? Tell us what you have, we show you what screws onto it — live prices and stock.

Pipe thread chart: inch / mm conversion (BSP, 15/21, 20/27, S60x6)

A “1/2 inch” thread measures 20.96 mm, not 12.7: in plumbing, the inch size is not converted, it is read from a chart. Here you will find the inch / mm correspondence of every common thread (BSP or “gas thread”, French names 15/21 · 20/27 · 26/34, NPT, S60x6 IBC tanks, Guillemin, Camlock, PVC), a tool that identifies your thread and the fitting that goes with it, and the pitfalls to avoid.

Which thread do you have? Which fitting do you need?

No need to know the name of your thread. Tell us what you need to connect to, or type what you know (“20/27”, “3/4 inch”, “S60x6”, “26.4 mm”): we identify the thread and show you the fittings that go with it. Dimensions according to ISO 228, ISO 7 and ASME B1.20.1.

20/27 · 26/34BSP / gas S60x6 · S100x8Camlock Guillemin DNNPT
✔ Shipped next working day from our stock✔ 4.5/5 from more than 6,400 customer reviews✔ Not sure? Describe what you need, we will find the fitting with you⎙ Printable thread gauge (PDF, actual size)

No need to know the name of your thread. Just answer the question: what do you need to connect to?

You already know the name of your thread? Type it the way you say it: 20/27, 26/34, 3/4 inch, S60x6… everything works.

Examples:

Tell us what you have and what you want to get: we look for the matching fitting in our catalogue.

Keeps only parts whose material is known and matches, for every part of the solution.
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Stainless Steel Male Splined Socket 316 ISO 4144 | PN 20 BarMale barbed sleeve in stainless steel 316
      €5.93i.e. €4.94 excl. VAT
      Stainless Steel Male Splined Socket 316 ISO 4144 | PN 20 BarMale barbed sleeve in stainless steel 316
          €5.93i.e. €4.94 excl. VAT
          Stainless Steel Male Splined Socket 316 ISO 4144 | PN 20 BarMale barbed sleeve in stainless steel 316
              316 stainless steel fittings
              The serial 8516 male barbed bushing in AISI 316 stainless steel is the reference fitting for fluid transfers under high pressure (20 bar). Compliant with ISO 4144 and equipped with a BSPT ISO 7-1 thread, it guarantees a perfect seal and exceptional resistance to extreme temperatures...
              €5.93i.e. €4.94 excl. VAT
              Mixed items
              Stainless Steel Male Splined Socket 316 ISO 4144 | PN 20 BarMale barbed sleeve in stainless steel 316
                  316 stainless steel fittings
                  The serial 8516 male barbed bushing in AISI 316 stainless steel is the reference fitting for fluid transfers under high pressure (20 bar). Compliant with ISO 4144 and equipped with a BSPT ISO 7-1 thread, it guarantees a perfect seal and exceptional resistance to extreme temperatures...
                  Mixed items
                  €5.93i.e. €4.94 excl. VAT
                  Lock nut Stainless Steel 316 ISO 4144 | PN 20 Bar | Threaded LockingStainless nut counter 316
                      €2.36i.e. €1.97 excl. VAT
                      Lock nut Stainless Steel 316 ISO 4144 | PN 20 Bar | Threaded LockingStainless nut counter 316
                          €2.36i.e. €1.97 excl. VAT
                          Lock nut Stainless Steel 316 ISO 4144 | PN 20 Bar | Threaded LockingStainless nut counter 316
                              316 stainless steel fittings
                              The AISI 316 stainless steel lock nut is the essential safety accessory for locking your threaded assemblies. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it prevents any accidental loosening of your fittings. Its exceptional resistance to extreme temperatures...
                              €2.36i.e. €1.97 excl. VAT
                              Mixed items
                              Lock nut Stainless Steel 316 ISO 4144 | PN 20 Bar | Threaded LockingStainless nut counter 316
                                  316 stainless steel fittings
                                  The AISI 316 stainless steel lock nut is the essential safety accessory for locking your threaded assemblies. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it prevents any accidental loosening of your fittings. Its exceptional resistance to extreme temperatures...
                                  Mixed items
                                  €2.36i.e. €1.97 excl. VAT
                                  316 stainless steel male / male nippleMale/male stainless steel nipple 316
                                      €4.74i.e. €3.95 excl. VAT
                                      316 stainless steel male / male nippleMale/male stainless steel nipple 316
                                          €4.74i.e. €3.95 excl. VAT
                                          316 stainless steel male / male nippleMale/male stainless steel nipple 316
                                              316 stainless steel fittings
                                              The 316 stainless steel fitting is a high-quality component, designed to meet the requirements of plumbing, heating and hydraulic systems. Its ISO 4144 compliance and ability to withstand a wide range of temperatures and pressures make it a reliable and durable choice. Easy to install and low maintenance, this fitting is ideal for use in demanding environments, providing excellent...
                                              €4.74i.e. €3.95 excl. VAT
                                              Mixed items
                                              316 stainless steel male / male nippleMale/male stainless steel nipple 316
                                                  316 stainless steel fittings
                                                  The 316 stainless steel fitting is a high-quality component, designed to meet the requirements of plumbing, heating and hydraulic systems. Its ISO 4144 compliance and ability to withstand a wide range of temperatures and pressures make it a reliable and durable choice. Easy to install and low maintenance, this fitting is ideal for use in demanding environments, providing excellent...
                                                  Mixed items
                                                  €4.74i.e. €3.95 excl. VAT
                                                  Reduced nipple male/male stainless steel 316 ISO 4144 | PN 20 BarMale/male reduced nipple in stainless steel 316
                                                      €2.45i.e. €2.04 excl. VAT
                                                      Reduced nipple male/male stainless steel 316 ISO 4144 | PN 20 BarMale/male reduced nipple in stainless steel 316
                                                          €2.45i.e. €2.04 excl. VAT
                                                          Reduced nipple male/male stainless steel 316 ISO 4144 | PN 20 BarMale/male reduced nipple in stainless steel 316
                                                              The 8245 series male/male reduced nipple in AISI 316 stainless steel is the ideal connection to connect two different diameters with maximum safety. Manufactured according to the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees a perfect seal thanks to its BSPT tapered...
                                                              €2.45i.e. €2.04 excl. VAT
                                                              Mixed items
                                                              Reduced nipple male/male stainless steel 316 ISO 4144 | PN 20 BarMale/male reduced nipple in stainless steel 316
                                                                  The 8245 series male/male reduced nipple in AISI 316 stainless steel is the ideal connection to connect two different diameters with maximum safety. Manufactured according to the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees a perfect seal thanks to its BSPT tapered...
                                                                  Mixed items
                                                                  €2.45i.e. €2.04 excl. VAT
                                                                  Machined sleeve stainless steel 316 ISO 4144 | PN 20 Bar | F/F316 stainless steel machined sleeve
                                                                      €3.12i.e. €2.60 excl. VAT
                                                                      Machined sleeve stainless steel 316 ISO 4144 | PN 20 Bar | F/F316 stainless steel machined sleeve
                                                                          €3.12i.e. €2.60 excl. VAT
                                                                          Machined sleeve stainless steel 316 ISO 4144 | PN 20 Bar | F/F316 stainless steel machined sleeve
                                                                              316 stainless steel fittings
                                                                              The AISI 316 Stainless Steel Machined Female/Female Sleeve is designed to create robust and durable linear junctions in demanding fluid networks. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees optimal sealing thanks to its ISO 7-1 (BSPT) thread....
                                                                              €3.12i.e. €2.60 excl. VAT
                                                                              Mixed items
                                                                              Machined sleeve stainless steel 316 ISO 4144 | PN 20 Bar | F/F316 stainless steel machined sleeve
                                                                                  316 stainless steel fittings
                                                                                  The AISI 316 Stainless Steel Machined Female/Female Sleeve is designed to create robust and durable linear junctions in demanding fluid networks. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees optimal sealing thanks to its ISO 7-1 (BSPT) thread....
                                                                                  Mixed items
                                                                                  €3.12i.e. €2.60 excl. VAT
                                                                                  90° Male/Female Elbow Stainless Steel 316 ISO 4144 | PN 20 BarElbow 90 Male / female in stainless steel 316
                                                                                      €3.96i.e. €3.30 excl. VAT
                                                                                      90° Male/Female Elbow Stainless Steel 316 ISO 4144 | PN 20 BarElbow 90 Male / female in stainless steel 316
                                                                                          €3.96i.e. €3.30 excl. VAT
                                                                                          90° Male/Female Elbow Stainless Steel 316 ISO 4144 | PN 20 BarElbow 90 Male / female in stainless steel 316
                                                                                              The 90° male/female elbow in AISI 316 stainless steel is the versatile solution for your right-angle changes of direction. Compliant with ISO 4144 and withstanding a pressure of 20 bar, it combines a tapered male thread and a cylindrical female thread according to ISO 7-1 (BSPT). Resistant to...
                                                                                              €3.96i.e. €3.30 excl. VAT
                                                                                              Mixed items
                                                                                              90° Male/Female Elbow Stainless Steel 316 ISO 4144 | PN 20 BarElbow 90 Male / female in stainless steel 316
                                                                                                  The 90° male/female elbow in AISI 316 stainless steel is the versatile solution for your right-angle changes of direction. Compliant with ISO 4144 and withstanding a pressure of 20 bar, it combines a tapered male thread and a cylindrical female thread according to ISO 7-1 (BSPT). Resistant to...
                                                                                                  Mixed items
                                                                                                  €3.96i.e. €3.30 excl. VAT
                                                                                                  Reduced Sleeve Female/Female Stainless Steel 316 ISO 4144 | PN 20 BarFemale/female reduced sleeve in stainless steel 316
                                                                                                      €2.32i.e. €1.93 excl. VAT
                                                                                                      Reduced Sleeve Female/Female Stainless Steel 316 ISO 4144 | PN 20 BarFemale/female reduced sleeve in stainless steel 316
                                                                                                          €2.32i.e. €1.93 excl. VAT
                                                                                                          Reduced Sleeve Female/Female Stainless Steel 316 ISO 4144 | PN 20 BarFemale/female reduced sleeve in stainless steel 316
                                                                                                              The AISI 316 Reduced Female/Female  Stainless Steel Sleeve is the ideal solution to adapt your pipe diameters with maximum tightness. ISO 4144 compliant and with a pressure of 20 bar, it guarantees a reliable transition thanks to its ISO 7-1 (BSPT) thread. Resistant to extreme temperatures...
                                                                                                              €2.32i.e. €1.93 excl. VAT
                                                                                                              Mixed items
                                                                                                              Reduced Sleeve Female/Female Stainless Steel 316 ISO 4144 | PN 20 BarFemale/female reduced sleeve in stainless steel 316
                                                                                                                  The AISI 316 Reduced Female/Female  Stainless Steel Sleeve is the ideal solution to adapt your pipe diameters with maximum tightness. ISO 4144 compliant and with a pressure of 20 bar, it guarantees a reliable transition thanks to its ISO 7-1 (BSPT) thread. Resistant to extreme temperatures...
                                                                                                                  Mixed items
                                                                                                                  €2.32i.e. €1.93 excl. VAT
                                                                                                                  Machined Half Sleeve Stainless Steel 316 ISO 4144 | PN 20 Bar | F/F1/2 stainless steel 316 stainless steel sleeve
                                                                                                                      €3.71i.e. €3.09 excl. VAT
                                                                                                                      Machined Half Sleeve Stainless Steel 316 ISO 4144 | PN 20 Bar | F/F1/2 stainless steel 316 stainless steel sleeve
                                                                                                                          €3.71i.e. €3.09 excl. VAT
                                                                                                                          Machined Half Sleeve Stainless Steel 316 ISO 4144 | PN 20 Bar | F/F1/2 stainless steel 316 stainless steel sleeve
                                                                                                                              The AISI 316 Stainless Steel Machined Half-Sleeve is designed to create strong and durable threaded taps by welding. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees a perfect seal thanks to its ISO 7-1 (BSPT) thread. Resistant to extreme conditions...
                                                                                                                              €3.71i.e. €3.09 excl. VAT
                                                                                                                              Mixed items
                                                                                                                              Machined Half Sleeve Stainless Steel 316 ISO 4144 | PN 20 Bar | F/F1/2 stainless steel 316 stainless steel sleeve
                                                                                                                                  The AISI 316 Stainless Steel Machined Half-Sleeve is designed to create strong and durable threaded taps by welding. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees a perfect seal thanks to its ISO 7-1 (BSPT) thread. Resistant to extreme conditions...
                                                                                                                                  Mixed items
                                                                                                                                  €3.71i.e. €3.09 excl. VAT
                                                                                                                                  Female 316 stainless steel capFemale stainless steel plug 316
                                                                                                                                      €1.81i.e. €1.51 excl. VAT
                                                                                                                                      Female 316 stainless steel capFemale stainless steel plug 316
                                                                                                                                          €1.81i.e. €1.51 excl. VAT
                                                                                                                                          Female 316 stainless steel capFemale stainless steel plug 316
                                                                                                                                              316 stainless steel fittings
                                                                                                                                              The 316 stainless steel female cap is designed to provide a reliable and secure closure of piping systems, ensuring a flawless seal. Manufactured according to ISO 4144, it can withstand a pressure of 20 bar and operate in a temperature range from -20 to +220°C. Its composition of AISI 316 stainless steel gives it excellent corrosion resistance, making it ideal for a variety of...
                                                                                                                                              €1.81i.e. €1.51 excl. VAT
                                                                                                                                              Mixed items
                                                                                                                                              Female 316 stainless steel capFemale stainless steel plug 316
                                                                                                                                                  316 stainless steel fittings
                                                                                                                                                  The 316 stainless steel female cap is designed to provide a reliable and secure closure of piping systems, ensuring a flawless seal. Manufactured according to ISO 4144, it can withstand a pressure of 20 bar and operate in a temperature range from -20 to +220°C. Its composition of AISI 316 stainless steel gives it excellent corrosion resistance, making it ideal for a variety of...
                                                                                                                                                  Mixed items
                                                                                                                                                  €1.81i.e. €1.51 excl. VAT
                                                                                                                                                  Single Reduction Stainless Steel 316 Male/Female ISO 4144 | PN 20 BarSingle Male / Female Stainless 316 Reduction
                                                                                                                                                      €3.23i.e. €2.69 excl. VAT
                                                                                                                                                      Single Reduction Stainless Steel 316 Male/Female ISO 4144 | PN 20 BarSingle Male / Female Stainless 316 Reduction
                                                                                                                                                          €3.23i.e. €2.69 excl. VAT
                                                                                                                                                          Single Reduction Stainless Steel 316 Male/Female ISO 4144 | PN 20 BarSingle Male / Female Stainless 316 Reduction
                                                                                                                                                              The single male/female reduction made of 316 stainless steel is the ideal transition solution for reliably adapting your pipe diameters. Compliant with ISO 4144 and withstanding a pressure of 20 bar, it ensures a perfect seal thanks to its ISO 7-1 conical/cylindrical thread (BSPT). Capable of...
                                                                                                                                                              €3.23i.e. €2.69 excl. VAT
                                                                                                                                                              Mixed items
                                                                                                                                                              Single Reduction Stainless Steel 316 Male/Female ISO 4144 | PN 20 BarSingle Male / Female Stainless 316 Reduction
                                                                                                                                                                  The single male/female reduction made of 316 stainless steel is the ideal transition solution for reliably adapting your pipe diameters. Compliant with ISO 4144 and withstanding a pressure of 20 bar, it ensures a perfect seal thanks to its ISO 7-1 conical/cylindrical thread (BSPT). Capable of...
                                                                                                                                                                  Mixed items
                                                                                                                                                                  €3.23i.e. €2.69 excl. VAT
                                                                                                                                                                  90° Female/Female Elbow Stainless Steel 316 ISO 4144 | PN 20 BarStainless steel 316 female/female 90° elbow
                                                                                                                                                                      €5.47i.e. €4.56 excl. VAT
                                                                                                                                                                      90° Female/Female Elbow Stainless Steel 316 ISO 4144 | PN 20 BarStainless steel 316 female/female 90° elbow
                                                                                                                                                                          €5.47i.e. €4.56 excl. VAT
                                                                                                                                                                          90° Female/Female Elbow Stainless Steel 316 ISO 4144 | PN 20 BarStainless steel 316 female/female 90° elbow
                                                                                                                                                                              The AISI 316 90° female/female stainless steel elbow is the reference solution for changes of direction in your fluid networks. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees a perfect seal thanks to its ISO 7-1 (BSPT) thread. Resistant to extreme...
                                                                                                                                                                              €5.47i.e. €4.56 excl. VAT
                                                                                                                                                                              Mixed items
                                                                                                                                                                              90° Female/Female Elbow Stainless Steel 316 ISO 4144 | PN 20 BarStainless steel 316 female/female 90° elbow
                                                                                                                                                                                  The AISI 316 90° female/female stainless steel elbow is the reference solution for changes of direction in your fluid networks. Compliant with the ISO 4144 standard and withstanding a pressure of 20 bar, it guarantees a perfect seal thanks to its ISO 7-1 (BSPT) thread. Resistant to extreme...
                                                                                                                                                                                  Mixed items
                                                                                                                                                                                  €5.47i.e. €4.56 excl. VAT
                                                                                                                                                                                  Male plug 316 stainless steelMale stainless steel plug 316
                                                                                                                                                                                      €1.94i.e. €1.62 excl. VAT
                                                                                                                                                                                      Male plug 316 stainless steelMale stainless steel plug 316
                                                                                                                                                                                          €1.94i.e. €1.62 excl. VAT
                                                                                                                                                                                          Male plug 316 stainless steelMale stainless steel plug 316
                                                                                                                                                                                              316 stainless steel fittings
                                                                                                                                                                                              The 316 stainless steel male plug is designed to provide a durable and secure solution for hermetically sealing piping systems. Manufactured according to ISO 4144, it withstands a pressure of 20 bar and a temperature of -20 to +220°C. Its exceptional corrosion resistance makes it an ideal choice for a variety of applications, from industrial to domestic. Its installation is easy thanks to...
                                                                                                                                                                                              €1.94i.e. €1.62 excl. VAT
                                                                                                                                                                                              Mixed items
                                                                                                                                                                                              Male plug 316 stainless steelMale stainless steel plug 316
                                                                                                                                                                                                  316 stainless steel fittings
                                                                                                                                                                                                  The 316 stainless steel male plug is designed to provide a durable and secure solution for hermetically sealing piping systems. Manufactured according to ISO 4144, it withstands a pressure of 20 bar and a temperature of -20 to +220°C. Its exceptional corrosion resistance makes it an ideal choice for a variety of applications, from industrial to domestic. Its installation is easy thanks to...
                                                                                                                                                                                                  Mixed items
                                                                                                                                                                                                  €1.94i.e. €1.62 excl. VAT