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. 310-8725
Mfr. Part No.1823 10 17
BrandLegris
$33.01
Each
units
3/8 in R Male 10 mm Barbed Male - - Tailpiece Adapter Hexagon Straight 3/8in - - Male Male - R (taper)
RS Stock No. 826-7131
BrandRS PRO
$121.54
Each
units
1/2 in R Male 1/2 in Rc Female 2.68in - Union Octagon Straight 1/2in 1/2in - Male Female - R (taper)
RS Stock No. 499-3518
BrandRS PRO
$20.51
Each
units
1 in G Female 1 in G Female 2.01in - Union Octagon Straight 1in 1in - Female Female - G (parallel)
RS Stock No. 826-7144
BrandRS PRO
$209.58
Each
units
1 in R Male 1 in Rc Female 3.39in - Union Octagon Straight 1in 1in - Male Female - R (taper)
RS Stock No. 826-7087
BrandRS PRO
$14.24
Each
units
1/2 in R Male 1/4 in Rc Female 0.75in - Bush Hexagon Straight 1/2in 1/4in - Male Female - R (taper)
RS Stock No. 499-2975
BrandRS PRO
$19.15
Each
units
1 in G Female 1 in G Female - - Elbow - 90° 1in 1in - Female Female - G (parallel)
RS Stock No. 826-7040
BrandRS PRO
$13.48
Each
units
1/4 in R Male 1/4 in R Male 1.42in - Nipple Hexagon Straight 1/4in 1/4in - Male Male - R (taper)
RS Stock No. 826-7034
BrandRS PRO
$32.69
Each
units
1-1/4 in R Male - 1.38in - Hexagon Plug Hexagon Straight 1-1/4in - - Male - - R (taper)
RS Stock No. 499-2947
BrandRS PRO
$5.10
Each
units
3/8 in R Male 3/8 in R Male 1.26in - Hexagon Nipple Hexagon - 3/8in 3/8in - Male Male - R (taper)
RS Stock No. 499-3805
BrandRS PRO
$49.36
Each
units
2 in R Male 51.5 mm Barbed Male 3.46in - Hose Nipple Hexagon - 2in - - Male Male - R (taper)
RS Stock No. 499-3502
BrandRS PRO
$28.05
Each
units
3/4 in G Female 3/4 in G Female 1.73in - Union Octagon Straight 3/4in 3/4in - Female Female - G (parallel)
RS Stock No. 826-6986
BrandRS PRO
$99.89
Each
units
1-1/4 in G Female 1-1/4 in G Female 4.02in 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. 458-6889
Mfr. Part No.1821 21 21
BrandLegris
$34.86
Each
units
1/2 in R Male 1/2 in R Male - - Coupler Hexagon Straight 1/2in 1/2in - Male Male - R (taper)
RS Stock No. 826-6955
BrandRS PRO
$60.67
Each
units
3/4 in R Male 3/4 in Rc Female - - Elbow Circular 90° 3/4in 3/4in - Male Female - R (taper)
RS Stock No. 826-7071
BrandRS PRO
$188.03
Each
units
2 in R Male 2 in R Male 2.8in - Nipple Hexagon Straight 2in 2in - Male Male - R (taper)
RS Stock No. 826-7107
BrandRS PRO
$60.32
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. 295-2745
Mfr. Part No.0285 17 00
BrandLegris
$19.085
Each (In a Pack of 2)
units
3/8 in R Male - - - Plug Hexagon - 3/8in - - Male - - R (taper)
RS Stock No. 499-3417
BrandRS PRO
$12.75
Each
units
1/4 in G Female 1/4 in G Female 1.36in - Union Hexagon Straight 1/4in 1/4in - Female Female - G (parallel)
RS Stock No. 499-3726
BrandRS PRO
$40.50
Each
units
2 in R Male 1/2 in G Female 1.32in - Bush Hexagon - 2in 1/2in - Male Female - R (taper)
RS Stock No. 826-6927
BrandRS PRO
$25.78
Each
units
1/2 in G Female 1/2 in G Female - - Elbow Circular 90° 1/2in 1/2in - Female Female - G (parallel)