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Machine screw nuts are typically a six-sided internally threaded fastener with a flat top and chamfered corners. They are designed for use with machine screws.

Machine screw nuts are also available as a four-sided, internally threaded fastener with a flat top and bottom, without chamfer. However, user interest in square machine screw nuts has declined significantly during the past several years.
STAINLESS 18 8 HEX MACHINE SCREW NUT (INCH)
Unit of Measure
1 

Item #

Item Name

Package Quantity

Web Price

4CNMSS/SMALL N/A #4-40 MACHINE SCREW NUT 18-8 STAINLESS (SMALL PATTERN) N/A 10000 $158.03
4CNMSS/SMALL N/A #4-40 MACHINE SCREW NUT 18-8 STAINLESS (SMALL PATTERN) N/A 100 QUOTE
6CNMSS/SMALL N/A #6-32 MACHINE SCREW NUT 18-8 STAINLESS (SMALL PATTERN) N/A 10000 $252.26
6CNMSS/SMALL N/A #6-32 MACHINE SCREW NUT 18-8 STAINLESS (SMALL PATTERN) N/A 100 QUOTE
8CNMSS/SMALL N/A #8-32 MACHINE SCREW NUT 18-8 STAINLESS (SMALL PATTERN) N/A 10000 QUOTE
8CNMSS/SMALL N/A #8-32 MACHINE SCREW NUT 18-8 STAINLESS (SMALL PATTERN) N/A 100 QUOTE
10CNMSS N/A #10-24 MACHINE SCREW NUT 18-8 STAINLESS N/A 5000 $187.29
10FNMSS N/A #10-32 MACHINE SCREW NUT 18-8 STAINLESS N/A 10000 $394.01
10FNMSS/SMALL N/A #10-32 MACHINE SCREW NUT 18-8 STAINLESS (SMALL PATTERN) N/A 10000 QUOTE
10CNMSS N/A #10-24 MACHINE SCREW NUT 18-8 STAINLESS N/A 100 $4.86
10FNMSS N/A #10-32 MACHINE SCREW NUT 18-8 STAINLESS N/A 100 QUOTE
10FNMSS/SMALL N/A #10-32 MACHINE SCREW NUT 18-8 STAINLESS (SMALL PATTERN) N/A 100 QUOTE
12CNMSS N/A #12-24 MACHINE SCREW NUT 18-8 STAINLESS N/A 3500 $271.95
12CNMSS N/A #12-24 MACHINE SCREW NUT 18-8 STAINLESS N/A 100 QUOTE
25CNMSS N/A 1/4-20 MACHINE SCREW NUT 18-8 STAINLESS N/A 5000 $301.74
25CNMSS N/A 1/4-20 MACHINE SCREW NUT 18-8 STAINLESS N/A 100 $7.82
Unit of Measure
1