SS Coupling Nut
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SS Coupling Nut

18-8 stainless steel hex coupling nuts are made from one of the following austenitic alloys: 303, 303Se, 304, XM7, all of which are characterized as having a chromium content of 17-19% and nickel content of 8-10%. Dimensional specifications are governed by ASME B18.2.2. There are no grade markings on 18-8 stainless hex coupling nuts. Coupling nuts, also known as extension nuts, are used for joining two male threads, usually threaded rods, in a variety of applications. 300 series stainless steel fasteners are commonly used in applications that require general atmospheric corrosion resistance, such as chemical and food processing equipment. Stainless steel has a higher corrosion resistance than carbon steel.

SS Coupling Nut
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Diameter Thread Pitch Width Across Flats Length Item # Availability Price Quantity UOM
1/4 20 3/8 7/8 NCOU025SS In Stock $1.03425/EA EA
5/16 18 7/16 1 NCOU031SS In Stock $1.27293/EA EA
3/8 16 1/2 1 1/8 NCOU037SS In Stock $1.39078/EA EA
1/2 13 5/8 1 1/4 NCOU050SS In Stock $2.31841/EA EA
5/8 11 7/8 1 3/4 NCOU062SS In Stock $8.47923/EA EA
3/4 10 1 2 NCOU075SS In Stock $11.61398/EA EA