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
TWD589.00
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
TWD90.00
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
TWD406.00
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
TWD440.00
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. 499-3518
BrandRS PRO
TWD805.00
Each
units
1 in G Female 1 in G Female 2.01in - Union Octagon Straight 1in 1in - Female Female - G (parallel)
RS Stock No. 826-6949
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. 499-2931
BrandRS PRO
TWD80.00
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. 826-6955
BrandRS PRO
TWD1,371.00
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. 499-3120
BrandRS PRO
TWD835.00
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)
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. 499-3524
BrandRS PRO
TWD153.00
Each
units
3/4 in R Male 1/2 in G Female 0.91in - Bush Hexagon - 3/4in 1/2in - Male Female - R (taper)
RS Stock No. 499-3136
BrandRS PRO
TWD457.00
Each
units
1-1/4 in G Female 1-1/4 in G Female - - Socket - - 1-1/4in 1-1/4in - Female Female - G (parallel)
RS Stock No. 826-6986
BrandRS PRO
TWD2,258.00
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. 222-6591
BrandRS PRO
TWD473.00
Each
units
1/2 in NPT Male - - - Plug Hexagon - 1/2in - - Male - - NPT (taper)
RS Stock No. 826-7144
BrandRS PRO
TWD4,378.00
Each
units
1 in R Male 1 in Rc Female 3.39in - Union Octagon Straight 1in 1in - Male Female - R (taper)
RS Stock No. 826-6996
BrandRS PRO
TWD248.00
Each
units
3/8 in Rc Female 3/8 in Rc Female 1.5in - Coupler Circular Straight 3/8in 3/8in - Female Female - Rc (taper)
RS Stock No. 499-3552
BrandRS PRO
TWD465.00
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. 458-6839
Mfr. Part No.1817 00 17
BrandLegris
TWD607.00
Each
units
3/8 in G Female - - - Bulkhead Adapter Hexagon Straight 3/8in - - Female - - G (parallel)
RS Stock No. 499-2947
BrandRS PRO
TWD99.00
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. 499-2880
BrandRS PRO
TWD126.00
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)