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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.
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Clear Filter

Diameter

Pitch

Coarse Fine

Material

18-8 Stainless Carbon Steel

Finish

Plain Zinc Plated

Item #

Item Name

Type

Diameter

Pitch

Material

Finish

Package Quantity

Web Price

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2CNHMZ N/A #2-56 HEX MACHINE SCREW NUT ZINC PLATED N/A Hex N/A #2 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 5000 $22.50 Add To Cart
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2CNMSS N/A #2-56 MACHINE SCREW NUT 18-8 STAINLESS N/A Hex N/A #2 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $1.28 Add To Cart
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2FNHMZ N/A #2-64 HEX MACHINE SCREW NUT ZINC PLATED N/A Hex N/A #2 N/A Fine N/A Carbon Steel N/A Zinc Plated N/A 30000 QUOTE Add To Cart
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3CNHMZ N/A #3-48 HEX MACHINE SCREW NUT ZINC PLATED N/A Hex N/A #3 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 5000 $22.50 Add To Cart
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3CNMSS N/A #3-48 MACHINE SCREW NUT 18-8 STAINLESS N/A Hex N/A #3 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $1.60 Add To Cart
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3FNHMZ N/A #3-56 HEX MACHINE SCREW NUT ZINC PLATED N/A Hex N/A #3 N/A Fine N/A Carbon Steel N/A Zinc Plated N/A 500 $3.50 Add To Cart
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4CNHMZ N/A #4-40 HEX MACHINE SCREW NUT ZINC PLATED N/A Hex N/A #4 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 5000 $36.25 Add To Cart
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4CNHMZ/SMALL N/A #4-40 HEX MACHINE SCREW NUT (SMALL PATTERN) ZINC PLATED N/A Hex N/A #4 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 5000 $20.00 Add To Cart
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4CNMSS N/A #4-40 MACHINE SCREW NUT 18-8 STAINLESS N/A Hex N/A #4 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $2.08 Add To Cart
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4CNHM N/A #4-40 HEX MACHINE SCREW NUT N/A Hex N/A #4 N/A Coarse N/A Carbon Steel N/A Plain N/A 100 $0.65 Add To Cart
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4CNHM/SMALL N/A #4-40 HEX MACHINE SCREW NUT (SMALL PATTERN) N/A Hex N/A #4 N/A Coarse N/A Carbon Steel N/A Plain N/A 100 $0.38 Add To Cart
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4CNMSS/SMALL N/A #4-40 MACHINE SCREW NUT (SMALL PATTERN) 18-8 STAINLESS N/A Hex N/A #4 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $1.30 Add To Cart
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5CNHM N/A #5-40 HEX MACHINE SCREW NUT N/A Hex N/A #5 N/A Coarse N/A Carbon Steel N/A Plain N/A 100 $0.93 Add To Cart
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5CNHMZ N/A #5-40 HEX MACHINE SCREW NUT ZINC PLATED N/A Hex N/A #5 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 1000 $9.75 Add To Cart
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6CNHMZ N/A #6-32 HEX MACHINE SCREW NUT ZINC PLATED N/A Hex N/A #6 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 1000 $9.75 Add To Cart
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6CNHMZ/SMALL N/A #6-32 HEX MACHINE SCREW NUT (SMALL PATTERN) ZINC PLATED N/A Hex N/A #6 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 1000 $4.75 Add To Cart
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6CNMSS N/A #6-32 MACHINE SCREW NUT 18-8 STAINLESS N/A Hex N/A #6 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $3.35 Add To Cart
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6CNMSS/SMALL N/A #6-32 MACHINE SCREW NUT (SMALL PATTERN) 18-8 STAINLESS N/A Hex N/A #6 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $2.20 Add To Cart
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6CNHM N/A #6-32 HEX MACHINE SCREW NUT N/A Hex N/A #6 N/A Coarse N/A Carbon Steel N/A Plain N/A 100 $0.93 Add To Cart
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6CNHM/SMALL N/A #6-32 HEX MACHINE SCREW NUT (SMALL PATTERN) N/A Hex N/A #6 N/A Coarse N/A Carbon Steel N/A Plain N/A 100 $0.45 Add To Cart
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6FNHMZ N/A #6-40 HEX MACHINE SCREW NUT ZINC PLATED N/A Hex N/A #6 N/A Fine N/A Carbon Steel N/A Zinc Plated N/A 6000 QUOTE Add To Cart
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8CNHMZ N/A #8-32 HEX MACHINE SCREW NUT ZINC PLATED N/A Hex N/A #8 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 1000 $11.25 Add To Cart
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8CNMSS N/A #8-32 MACHINE SCREW NUT 18-8 STAINLESS N/A Hex N/A #8 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $4.03 Add To Cart
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8CNHM N/A #8-32 HEX MACHINE SCREW NUT N/A Hex N/A #8 N/A Coarse N/A Carbon Steel N/A Plain N/A 100 $1.08 Add To Cart
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8CNHM/SMALL N/A #8-32 HEX MACHINE SCREW NUT (SMALL PATTERN) N/A Hex N/A #8 N/A Coarse N/A Carbon Steel N/A Plain N/A 100 $0.73 Add To Cart
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