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. 499-2880
BrandRS PRO
$7.01
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. 499-3041
BrandRS PRO
$8.74
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. 458-6823
Mfr. Part No.1817 00 13
BrandLegris
$40.26
Each
units
1/4 in G Female - - - Bulkhead Adapter Hexagon Straight 1/4in - - Female - - G (parallel)
RS Stock No. 499-3243
BrandRS PRO
$6.854
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. 499-3293
BrandRS PRO
$54.89
Each
units
2 in R Male 2 in R Male 3.94in - Barrel Nipple Circular - 2in 2in - Male Male - R (taper)
RS Stock No. 458-6845
Mfr. Part No.1817 00 21
BrandLegris
$58.53
Each
units
1/2 in G Female - - - Bulkhead Adapter Hexagon Straight 1/2in - - Female - - G (parallel)
RS Stock No. 826-7074
BrandRS PRO
$11.49
Each
units
1/4 in R Male Rc Female 0.55in - Bush Hexagon Straight 1/4in 1/8in - Male Female - R (taper)
RS Stock No. 499-2981
BrandRS PRO
$11.23
Each
units
1/2 in G Female 1/2 in G Female 2.17in 1/2 in G Female Tee Circular Tee 1/2in 1/2in 1/2 Female Female Female G (parallel)
RS Stock No. 310-8696
Mfr. Part No.1861 10 13
BrandLegris
$30.06
Each
units
1/8 in R Male 1/4 in G Female - - Increaser Hexagon Straight 1/8in 1/4in - Male Female - R (taper)
RS Stock No. 826-6968
BrandRS PRO
$31.54
Each
units
1/4 in G Female 1/4 in G Female 1.96in 1/4 in G Female Tee Circular Tee 1/4in 1/4in 1/4 Female Female Female G (parallel)
RS Stock No. 826-6970
BrandRS PRO
$53.64
Each
units
1/2 in G Female 1/2 in G Female 2.6in 1/2 in G Female Tee Circular Tee 1/2in 1/2in 1/2 Female Female Female G (parallel)
RS Stock No. 458-6817
Mfr. Part No.1817 00 10
BrandLegris
$30.60
Each
units
1/8 in G Female - - - Bulkhead Adapter Hexagon Straight 1/8in - - Female - - G (parallel)
RS Stock No. 499-3013
BrandRS PRO
$8.95
Each
units
1/2 in G Female 1/2 in G Female - - Socket - - 1/2in 1/2in - Female Female - G (parallel)
RS Stock No. 295-2767
Mfr. Part No.1823 07 13
BrandLegris
$37.20
Each
units
1/4 in R Male 7 mm Barbed Male - - Tailpiece Adapter Hexagon Straight 1/4in - - Male Male - R (taper)
RS Stock No. 826-7129
BrandRS PRO
$76.35
Each
units
1/4 in R Male 1/4 in Rc Female 2.18in - Union Hexagon Straight 1/4in 1/4in - Male Female - R (taper)
RS Stock No. 499-3546
BrandRS PRO
$12.62
Each
units
1 in R Male 3/4 in G Female 1.06in - Bush Hexagon - 1in 3/4in - Male Female - R (taper)
RS Stock No. 826-7144
BrandRS PRO
$225.09
Each
units
1 in R Male 1 in Rc Female 3.39in - Union Octagon Straight 1in 1in - Male Female - R (taper)
RS Stock No. 499-3502
BrandRS PRO
$30.13
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. 499-3495
BrandRS PRO
$22.52
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. 458-6839
Mfr. Part No.1817 00 17
BrandLegris
$47.40
Each
units
3/8 in G Female - - - Bulkhead Adapter Hexagon Straight 3/8in - - Female - - G (parallel)