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. 295-2767
Mfr. Part No.1823 07 13
BrandLegris
TWD566.00
Each
units
1/4 in R Male 7 mm Barbed Male - - Tailpiece Adapter Hexagon Straight 1/4in - - Male Male - R (taper)
RS Stock No. 499-2919
BrandRS PRO
TWD89.00
Each
units
3/8 in G Female 3/8 in G Female - - Socket - - 3/8in 3/8in - Female Female - G (parallel)
RS Stock No. 499-3495
BrandRS PRO
TWD400.00
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. 310-8668
Mfr. Part No.1863 17 13
BrandLegris
TWD424.00
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. 499-2903
BrandRS PRO
TWD78.00
Each
units
1/4 in G Female 1/4 in G Female - - Socket - - 1/4in 1/4in - Female Female - G (parallel)
RS Stock No. 826-7024
BrandRS PRO
TWD168.00
Each
units
3/8 in R Male - 0.82in - Hexagon Plug Hexagon Straight 3/8in - - Male - - R (taper)
RS Stock No. 826-6977
BrandRS PRO
TWD620.00
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. 499-3619
BrandRS PRO
TWD406.00
Each
units
1-1/2 in R Male 1 in G Female 1.18in - Bush Hexagon - 1-1/2in 1in - Male Female - R (taper)
RS Stock No. 458-6845
Mfr. Part No.1817 00 21
BrandLegris
TWD717.00
Each
units
1/2 in G Female - - - Bulkhead Adapter Hexagon Straight 1/2in - - Female - - G (parallel)
RS Stock No. 499-3552
BrandRS PRO
TWD460.00
Each
units
1-1/4 in R Male 1/2 in G Female 1.18in - Bush Hexagon - 1-1/4in 1/2in - Male Female - R (taper)
RS Stock No. 222-6620
BrandRS PRO
TWD985.00
Each
units
1 in NPT Male - - - Plug Hexagon - 1in - - Male - - NPT (taper)
RS Stock No. 499-3451
BrandRS PRO
TWD110.00
Each
units
1/2 in R Male 1/4 in G Female 0.87in - Bush Hexagon - 1/2in 1/4in - Male Female - 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. 499-3417
BrandRS PRO
TWD243.00
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. 499-3748
BrandRS PRO
TWD193.00
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. 826-7028
BrandRS PRO
TWD220.00
Each
units
1/2 in R Male - 0.86in - Hexagon Plug Hexagon Straight 1/2in - - Male - - R (taper)
RS Stock No. 499-3013
BrandRS PRO
TWD160.00
Each
units
1/2 in G Female 1/2 in G Female - - Socket - - 1/2in 1/2in - Female Female - G (parallel)
RS Stock No. 826-6983
BrandRS PRO
TWD2,586.00
Each
units
1 in G Female 1 in G Female 3.46in 1 in G Female Tee Circular Tee 1in 1in 1 Female Female Female G (parallel)
RS Stock No. 499-3388
BrandRS PRO
TWD1,096.00
Each
units
2 in G Female 2 in R Male - - Elbow Circular 90° 2in 2in - Female Male - R (taper)
RS Stock No. 499-3580
BrandRS PRO
TWD461.00
Each
units
1-1/2 in R Male 1/2 in G Female 1.18in - Bush Hexagon - 1-1/2in 1/2in - Male Female - R (taper)