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. 826-7135
BrandRS PRO
$147.75
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. 310-8618
Mfr. Part No.1855 10 10
BrandLegris
$17.43
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. 499-3681
BrandRS PRO
$46.08
Each
units
1-1/4 in G Female 1-1/4 in G Female 2.28in - Union Decagon Straight 1-1/4in 1-1/4in - Female Female - G (parallel)
RS Stock No. 499-3423
BrandRS PRO
$16.83
Each
units
3/8 in G Female 3/8 in G Female 1.48in - Union Octagon Straight 3/8in 3/8in - Female Female - G (parallel)
RS Stock No. 826-7122
BrandRS PRO
$144.81
Each
units
1-1/2 in Rc Female 1-1/2 in Rc Female 3.01in - Union Decagon Straight 1-1/2in 1-1/2in - Female Female - Rc (taper)
RS Stock No. 826-7030
BrandRS PRO
$23.95
Each
units
1 in R Male - 1.14in - Hexagon Plug Hexagon Straight 1in - - Male - - R (taper)
RS Stock No. 499-3669
BrandRS PRO
$19.25
Each
units
1-1/2 in R Male - 1.21in - Plug Hexagon - 1-1/2in - - Male - - R (taper)
RS Stock No. 826-7113
BrandRS PRO
$98.39
Each
units
1-1/4 in Rc Female 1-1/4 in Rc Female 2.8in - Union Decagon Straight 1-1/4in 1-1/4in - Female Female - Rc (taper)
RS Stock No. 499-3271
BrandRS PRO
$28.05
Each
units
1-1/4 in R Male 1-1/4 in R Male 3.15in - Barrel Nipple Circular - 1-1/4in 1-1/4in - Male Male - R (taper)
RS Stock No. 295-2795
Mfr. Part No.1823 16 21
BrandLegris
$54.22
Each
units
1/2 in R Male 16 mm Barbed Male - - Tailpiece Adapter Hexagon Straight 1/2in - - Male Male - R (taper)
RS Stock No. 499-3495
BrandRS PRO
$19.58
Each
units
1/2 in G Female 1/2 in G Female 1.52in - Union Octagon Straight 1/2in 1/2in - Female Female - G (parallel)
RS Stock No. 499-3035
BrandRS PRO
$16.35
Each
units
1 in G Female 1 in G Female - - Socket - - 1in 1in - Female Female - G (parallel)
RS Stock No. 826-7046
BrandRS PRO
$76.81
Each
units
2 in R Male - 1.58in - Hexagon Plug Hexagon Straight 2in - - Male - - R (taper)
RS Stock No. 826-6977
BrandRS PRO
$29.83
Each
units
3/8 in G Female 3/8 in G Female 2.2in 3/8 in G Female Tee Circular Tee 3/8in 3/8in 3/8 Female Female Female G (parallel)
RS Stock No. 826-7018
BrandRS PRO
$76.38
Each
units
1-1/2 in Rc Female 1-1/2 in Rc Female 3.11in - Coupler Circular Straight 1-1/2in 1-1/2in - Female Female - Rc (taper)
RS Stock No. 310-8630
Mfr. Part No.1855 17 17
BrandLegris
$25.98
Each
units
3/8 in G Female 3/8 in G Female - - Coupler Hexagon Straight 3/8in 3/8in - Female Female - G (parallel)
RS Stock No. 499-3467
BrandRS PRO
$5.29
Each
units
1/2 in R Male - 0.89in - Plug Hexagon - 1/2in - - Male - - R (taper)
RS Stock No. 826-7100
BrandRS PRO
$36.36
Each
units
1/4 in Rc Female 1/4 in Rc Female 1.63in - Union Hexagon Straight 1/4in 1/4in - Female Female - Rc (taper)
RS Stock No. 499-3007
BrandRS PRO
$25.69
Each
units
1 in G Female 1 in G Female 2.76in 1 in G Female Tee Circular Tee 1in 1in 1 Female Female Female G (parallel)
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