Stainless Steel Threaded Fittings

Stainless steel threaded fittings are used to connect steel pipes. Tapered threads are cut into the end of the pipe, sealant is applied in the form of thread-sealing compound or thread seal tape (which is also known as PTFE or Teflon tape), and a pipe wrench is used to thread the pipe into a threaded fitting.

What are stainless steel threaded fittings used for?

Stainless steel threaded fittings are often used in buildings to convey natural gas or propane fuel, or in plumbing systems. They are a popular choice in fire sprinkler systems due to their resistance to mechanical damage and intense heat.

Threaded fittings made with stainless steel take advantage of the metal’s strength, resistance to corrosion and ease of cleaning.

Types of stainless steel threaded fittings

Different types of stainless steel threaded fittings include bulkhead adapters (used to connect tubing or piping of different sizes and configurations through a panel), nipples (used to connect two other fittings), elbows (used to connect pipes at curved angles), and tees (T-shaped fittings that accommodate three pipes).

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Part Details Brand Connection 1 Length Connection 2 Connection 3 Fitting Type Shape Fitting Direction Thread Size 1 Thread Size 2 Thread Size 3 Connection Gender 1 Connection Gender 2 Connection Gender 3 Thread Standard 1 Thread Standard 2
Watts Safety Group Angled 19.05mm G(P) Female x 19.05mm G(P) Male Male G(P) 105.5mm Watts - 105.5mm - - - - Angled 19.05mm 19.05mm - Female Male Male G (parallel) G (parallel)
Watts Safety Group Straight 19.05mm G(P) Female x 19.05mm G(P) Female Female G(P) 105.5mm Watts 3/4 in G Female 105.5mm 3/4 in G Female 1 in G Female - - Straight 19.05mm 19.05mm - Female Female Female G (parallel) G (parallel)
Watts Safety Group Straight 19.05mm G(P) Female x 19.05mm G(P) Female Female G(P) 105.5mm Watts 3/4 in G Female 105.5mm 3/4 in G Female 1 in G Female - - Straight 19.05mm 19.05mm - Female Female Female G (parallel) G (parallel)
RS PRO Stainless Steel Circular 90° Elbow 1/2in R(T) Female x 1/2in R(T) Male RS Pro 1/2 in G Female - 1/2 in R Male - Elbow Circular 90° 1/2in 1/2in - Female Male - R (taper) R (taper)
RS PRO Stainless Steel Hexagon Hexagon Nipple 1/4in R(T) Male x 1/4in R(T) Male 1.26in RS Pro 1/4 in R Male 1.26in 1/4 in R Male - Hexagon Nipple Hexagon - 1/4in 1/4in - Male Male - R (taper) R (taper)
RS PRO Stainless Steel Hexagon Hexagon Nipple 1/2in R(T) Male x 1/2in R(T) Male 1.65in RS Pro 1/2 in R Male 1.65in 1/2 in R Male - Hexagon Nipple Hexagon - 1/2in 1/2in - Male Male - R (taper) R (taper)
RS PRO Stainless Steel Circular Barrel Nipple 1/2in R(T) Male x 1/2in R(T) Male 2.36in RS Pro 1/2 in R Male 2.36in 1/2 in R Male - Barrel Nipple Circular - 1/2in 1/2in - Male Male - R (taper) R (taper)
RS PRO Stainless Steel Hexagon Hose Nipple 1/2in R(T) Male Male 2.22in RS Pro 1/2 in R Male 2.22in 13 mm Barbed Male - Hose Nipple Hexagon - 1/2in - - Male Male - R (taper) -
RS PRO Stainless Steel Hexagon Hose Nipple 3/4in R(T) Male Male 2.36in RS Pro 3/4 in R Male 2.36in 20 mm Barbed Male - Hose Nipple Hexagon - 3/4in - - Male Male - R (taper) -
RS PRO Stainless Steel Hexagon Plug 1/2in R(T) Male 0.89in RS Pro 1/2 in R Male 0.89in - - Plug Hexagon - 1/2in - - Male - - R (taper) -
RS PRO Stainless Steel Hexagon Hose Nipple 1/4in R(T) Male Male 1.69in RS Pro 1/4 in R Male 1.69in 8 mm Barbed Male - Hose Nipple Hexagon - 1/4in - - Male Male - R (taper) -
RS PRO Stainless Steel Circular Barrel Nipple 1/4in R(T) Male x 1/4in R(T) Male 1.57in RS Pro 1/4 in R Male 1.57in 1/4 in R Male - Barrel Nipple Circular - 1/4in 1/4in - Male Male - R (taper) R (taper)
RS PRO Stainless Steel Circular Barrel Nipple 3/8in R(T) Male x 3/8in R(T) Male 1.57in RS Pro 3/8 in R Male 1.57in 3/8 in R Male - Barrel Nipple Circular - 3/8in 3/8in - Male Male - R (taper) R (taper)
RS PRO Stainless Steel Socket 1/2in G(P) Female x 1/2in G(P) Female RS Pro 1/2 in G Female - 1/2 in G Female - Socket - - 1/2in 1/2in - Female Female - G (parallel) G (parallel)
RS PRO Stainless Steel Hexagon Hose Nipple 1in R(T) Male Male 2.72in RS Pro 1 in R Male 2.72in 25 mm Barbed Male - Hose Nipple Hexagon - 1in - - Male Male - R (taper) -
RS PRO Stainless Steel Hexagon Bush 1/2in R(T) Male x 1/4in G(P) Female 0.87in RS Pro 1/2 in R Male 0.87in 1/4 in G Female - Bush Hexagon - 1/2in 1/4in - Male Female - R (taper) G (parallel)
RS PRO Stainless Steel Hexagon Bush 1in R(T) Male x 3/4in G(P) Female 1.06in RS Pro 1 in R Male 1.06in 3/4 in G Female - Bush Hexagon - 1in 3/4in - Male Female - R (taper) G (parallel)
RS PRO Stainless Steel Hexagon Hexagon Nipple 3/4in R(T) Male x 3/4in R(T) Male 1.71in RS Pro 3/4 in R Male 1.71in 3/4 in R Male - Hexagon Nipple Hexagon - 3/4in 3/4in - Male Male - R (taper) R (taper)
RS PRO Stainless Steel Socket 3/8in G(P) Female x 3/8in G(P) Female RS Pro 3/8 in G Female - 3/8 in G Female - Socket - - 3/8in 3/8in - Female Female - G (parallel) G (parallel)
RS PRO Stainless Steel Circular Barrel Nipple 3/4in R(T) Male x 3/4in R(T) Male 2.36in RS Pro 3/4 in R Male 2.36in 3/4 in R Male - Barrel Nipple Circular - 3/4in 3/4in - Male Male - R (taper) R (taper)
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