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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Description Price Connection 1 Connection 2 Length 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
RS Stock No. 826-6996
BrandRS PRO
TWD244.00
Each
units
3/8 in Rc Female 3/8 in Rc Female 1.5in - Coupler Circular Straight 3/8in 3/8in - Female Female - Rc (taper)
RS Stock No. 499-3776
BrandRS PRO
TWD393.00
Each
units
1 in R Male 25 mm Barbed Male 2.72in - Hose Nipple Hexagon - 1in - - Male Male - R (taper)
RS Stock No. 826-7084
BrandRS PRO
TWD575.00
Each
units
1 in R Male 3/4 in Rc Female 0.99in - Bush Hexagon Straight 1in 3/4in - Male Female - R (taper)
RS Stock No. 310-8618
Mfr. Part No.1855 10 10
BrandLegris
TWD366.00
Each
units
1/8 in G Female 1/8 in G Female - - Coupler Hexagon Straight 1/8in 1/8in - Female Female - G (parallel)
RS Stock No. 499-2997
BrandRS PRO
TWD309.00
Each
units
3/4 in G Female 3/4 in G Female 2.36in 3/4 in G Female Tee Circular Tee 3/4in 3/4in 3/4 Female Female Female G (parallel)
RS Stock No. 499-3035
BrandRS PRO
TWD335.00
Each
units
1 in G Female 1 in G Female - - Socket - - 1in 1in - Female Female - G (parallel)
RS Stock No. 458-6839
Mfr. Part No.1817 00 17
BrandLegris
TWD580.00
Each
units
3/8 in G Female - - - Bulkhead Adapter Hexagon Straight 3/8in - - Female - - G (parallel)
RS Stock No. 222-6591
BrandRS PRO
TWD466.00
Each
units
1/2 in NPT Male - - - Plug Hexagon - 1/2in - - Male - - NPT (taper)
RS Stock No. 222-6658
BrandRS PRO
TWD1,740.00
Each
units
1 in NPT Male 1 in NPT Male - - Nipple Hexagon - 1in 1in - Male Male - NPT (taper)
RS Stock No. 458-6851
Mfr. Part No.1821 10 10
BrandLegris
TWD249.00
Each
units
1/8 in R Male 1/8 in R Male - - Coupler Hexagon Straight 1/8in 1/8in - Male Male - R (taper)
RS Stock No. 499-3079
BrandRS PRO
TWD494.00
Each
units
1-1/4 in G Female 1-1/4 in G Female - - Elbow - 90° 1-1/4in 1-1/4in - Female Female - G (parallel)
RS Stock No. 499-2931
BrandRS PRO
TWD78.00
Each
units
1/4 in R Male 1/4 in R Male 1.26in - Hexagon Nipple Hexagon - 1/4in 1/4in - Male Male - R (taper)
RS Stock No. 826-7125
BrandRS PRO
TWD3,191.00
Each
units
2 in Rc Female 2 in Rc Female 3.39in - Union Decagon Straight 2in 2in - Female Female - Rc (taper)
RS Stock No. 499-3574
BrandRS PRO
TWD414.00
Each
units
1-1/4 in R Male 1 in G Female 1.18in - Bush Hexagon - 1-1/4in 1in - Male Female - R (taper)
RS Stock No. 499-3114
BrandRS PRO
TWD754.00
Each
units
1-1/4 in G Female 1-1/4 in G Female 3.35in 1-1/4 in G Female Tee Circular Tee 1-1/4in 1-1/4in 1-1/4 Female Female Female G (parallel)
RS Stock No. 826-7135
BrandRS PRO
TWD3,072.00
Each
units
3/4 in R Male 3/4 in Rc Female 2.99in - Union Octagon Straight 3/4in 3/4in - Male Female - R (taper)
RS Stock No. 499-3675
BrandRS PRO
TWD574.00
Each
units
2 in R Male - 1.34in - Plug Hexagon - 2in - - Male - - R (taper)
RS Stock No. 499-3603
BrandRS PRO
TWD426.00
Each
units
1-1/2 in R Male 3/4 in G Female 1.18in - Bush Hexagon - 1-1/2in 3/4in - Male Female - R (taper)
RS Stock No. 826-7107
BrandRS PRO
TWD1,163.00
Each
units
1/2 in Rc Female 1/2 in Rc Female 1.93in - Union Octagon Straight 1/2in 1/2in - Female Female - Rc (taper)
RS Stock No. 826-7030
BrandRS PRO
TWD491.00
Each
units
1 in R Male - 1.14in - Hexagon Plug Hexagon Straight 1in - - Male - - R (taper)