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 STAINLESS STEEL HEX COUPLING NUT

$1.01483/EA
In Stock
Quantity Price
Quantity Price
1 $1.01483/ EA
1730 $0.95073/ EA
6900 $0.84668/ EA
31040 $0.56107/ EA

5/16-18 STAINLESS STEEL HEX COUPLING NUT

$1.20457/EA
In Stock
Quantity Price
Quantity Price
1 $1.20457/ EA
130 $1.12905/ EA
510 $1.00394/ EA
2260 $0.66899/ EA

3/8-16 STAINLESS STEEL HEX COUPLING NUT

$1.36853/EA
In Stock
Quantity Price
Quantity Price
1 $1.36853/ EA
120 $1.28412/ EA
470 $1.13941/ EA
2110 $0.76506/ EA

1/2-13 STAINLESS STEEL HEX COUPLING NUT

$3.82218/EA
In Stock
Quantity Price
Quantity Price
1 $3.82218/ EA
100 $3.59645/ EA
370 $3.17787/ EA
1660 $2.1894/ EA

5/8-11 STAINLESS STEEL HEX COUPLING NUT

$8.63999/EA
In Stock
Quantity Price
Quantity Price
1 $8.63999/ EA
60 $8.13799/ EA
220 $7.18072/ EA
960 $4.98547/ EA

3/4-10 STAINLESS STEEL HEX COUPLING NUT

$14.41957/EA
In Stock
Quantity Price
Quantity Price
1 $14.41957/ EA
40 $13.59184/ EA
140 $11.98971/ EA
630 $8.38931/ EA