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. 826-7040
BrandRS PRO
TWD259.00
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. 499-3063
BrandRS PRO
TWD310.00
Each
units
1 in R Male 1 in R Male 1.93in - Hexagon Nipple Hexagon - 1in 1in - Male Male - 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. 499-3760
BrandRS PRO
TWD326.00
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. 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. 295-2789
Mfr. Part No.1823 13 17
BrandLegris
TWD735.00
Each
units
3/8 in R Male 13 mm Barbed Male - - Tailpiece Adapter Hexagon Straight 3/8in - - Male Male - R (taper)
RS Stock No. 499-3237
BrandRS PRO
TWD86.00
Each (In a Pack of 5)
units
3/8 in R Male 3/8 in R Male 1.57in - Barrel Nipple Circular - 3/8in 3/8in - Male Male - R (taper)
RS Stock No. 826-7093
BrandRS PRO
TWD899.00
Each
units
1-1/4 in R Male 1 in Rc Female 1.11in - Bush Hexagon Straight 1-1/4in 1in - Male Female - R (taper)
RS Stock No. 222-6658
BrandRS PRO
TWD1,740.00
Each
units
1 in NPT Male 1 in NPT Male - - Nipple Hexagon - 1in 1in - Male 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. 826-7122
BrandRS PRO
TWD3,011.00
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. 826-6949
BrandRS PRO
TWD877.00
Each
units
1/4 in R Male 1/4 in Rc Female - - Elbow Circular 90° 1/4in 1/4in - Male Female - R (taper)
RS Stock No. 310-8703
Mfr. Part No.1861 13 21
BrandLegris
TWD823.00
Each
units
1/4 in R Male 1/2 in G Female - - Increaser Hexagon Straight 1/4in 1/2in - Male Female - R (taper)
RS Stock No. 826-7037
BrandRS PRO
TWD301.00
Each
units
3/4 in R Male - 1.02in - Hexagon Plug Hexagon Straight 3/4in - - Male - - R (taper)
RS Stock No. 826-7065
BrandRS PRO
TWD1,113.00
Each
units
1 in R Male 1 in R Male 2.36in - Nipple Hexagon Straight 1in 1in - Male Male - R (taper)
RS Stock No. 310-8725
Mfr. Part No.1823 10 17
BrandLegris
TWD629.00
Each
units
3/8 in R Male 10 mm Barbed Male - - Tailpiece Adapter Hexagon Straight 3/8in - - Male Male - 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. 499-3041
BrandRS PRO
TWD156.00
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. 826-7024
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. 499-3120
BrandRS PRO
TWD822.00
Each
units
1-1/2 in G Female 1-1/2 in G Female 3.48in 1-1/2 in G Female Tee Circular Tee 1-1/2in 1-1/2in 1-1/2 Female Female Female G (parallel)