Mutual Screw & Supply

#4-40 X 3/4" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Fully Threaded | Alloy Steel Thermal Black Oxide (200 / Pkg.)

#4-40 X 3/4" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Fully - Main image
$29.82 $45.18 In stock

These #4-40 x 3/4" socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #4-40
  • Length: 3/4"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #4-40
  • Length: 3/4"
  • Threads per inch: 40
  • Measurement type: Inch
  • Pack quantity: 200 per package
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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Timothy ★★★★★

The hex socket drive engages perfectly with my Allen wrench, and the black oxide finish on these #4-40 screws feels durable. They held tight in my jig assembly after a full day of machining without any loosening.

Lucy ★★★★★

Was a little surprised how much these little screws weigh for their size—that black oxide coating is no joke. Fit perfectly in the fixture I'm building.

James O. ★★★★★

The black oxide finish on these #4-40 screws is really even and seems like it'll hold up well in my precision fixtures. They thread smoothly into tapped holes without binding, and the nylon pellet is a nice touch for locking them in place.