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. 499-3776
BrandRS PRO
$20.45
Each
units
1 in R Male 25 mm Barbed Male 2.72in - Hose Nipple Hexagon - 1in - - Male Male - R (taper)
RS Stock No. 499-3732
BrandRS PRO
$7.83
Each
units
1/4 in R Male 8 mm Barbed Male 1.69in - Hose Nipple Hexagon - 1/4in - - Male Male - R (taper)
RS Stock No. 499-3754
BrandRS PRO
$13.69
Each
units
1/2 in R Male 13 mm Barbed Male 2.22in - Hose Nipple Hexagon - 1/2in - - Male Male - R (taper)
RS Stock No. 499-3243
BrandRS PRO
$6.382
Each (In a Pack of 5)
units
1/2 in R Male 1/2 in R Male 2.36in - Barrel Nipple Circular - 1/2in 1/2in - Male Male - R (taper)
RS Stock No. 499-2931
BrandRS PRO
$4.13
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. 499-3760
BrandRS PRO
$17.13
Each
units
3/4 in R Male 20 mm Barbed Male 2.36in - Hose Nipple Hexagon - 3/4in - - Male Male - R (taper)
RS Stock No. 499-3029
BrandRS PRO
$10.54
Each
units
3/4 in G Female 3/4 in G Female - - Socket - - 3/4in 3/4in - Female Female - G (parallel)
RS Stock No. 499-2880
BrandRS PRO
$7.28
Each
units
1/4 in G Female 1/4 in G Female 1.54in 1/4 in G Female Tee Circular Tee 1/4in 1/4in 1/4 Female Female Female G (parallel)
RS Stock No. 499-2969
BrandRS PRO
$11.19
Each
units
3/4 in G Female 3/4 in G Female - - Elbow - 90° 3/4in 3/4in - Female Female - G (parallel)
RS Stock No. 499-3394
BrandRS PRO
$3.43
Each
units
1/4 in R Male - 0.71in - Plug Hexagon - 1/4in - - Male - - R (taper)
RS Stock No. 499-3041
BrandRS PRO
$8.14
Each
units
1/2 in R Male 1/2 in R Male 1.65in - Hexagon Nipple Hexagon - 1/2in 1/2in - Male Male - R (taper)
RS Stock No. 826-7028
BrandRS PRO
$11.40
Each
units
1/2 in R Male - 0.86in - Hexagon Plug Hexagon Straight 1/2in - - Male - - R (taper)
RS Stock No. 826-7078
BrandRS PRO
$12.03
Each
units
3/8 in R Male 1/4 in Rc Female 0.67in - Bush Hexagon Straight 3/8in 1/4in - Male Female - R (taper)
RS Stock No. 499-3748
BrandRS PRO
$9.88
Each
units
3/8 in R Male 10 mm Barbed Male 1.93in - Hose Nipple Hexagon - 3/8in - - Male Male - R (taper)
RS Stock No. 499-3013
BrandRS PRO
$8.33
Each
units
1/2 in G Female 1/2 in G Female - - Socket - - 1/2in 1/2in - Female Female - G (parallel)
RS Stock No. 458-6823
Mfr. Part No.1817 00 13
BrandLegris
$37.49
Each
units
1/4 in G Female - - - Bulkhead Adapter Hexagon Straight 1/4in - - Female - - G (parallel)
RS Stock No. 499-3568
BrandRS PRO
$22.18
Each
units
1-1/4 in R Male 3/4 in G Female 1.18in - Bush Hexagon - 1-1/4in 3/4in - Male Female - R (taper)
RS Stock No. 499-3603
BrandRS PRO
$22.29
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. 310-8668
Mfr. Part No.1863 17 13
BrandLegris
$22.72
Each
units
3/8 in R Male 1/4 in G Female - - Reducer Hexagon Straight 3/8in 1/4in - Male Female - R (taper)
RS Stock No. 295-2773
Mfr. Part No.1823 10 13
BrandLegris
$34.45
Each
units
1/4 in R Male 10 mm Barbed Male - - Tailpiece Adapter Hexagon Straight 1/4in - - Male Male - R (taper)