Mutual Screw & Supply

#4-40 X 1/2" Socket Cap Screws | Flat Head Hex Socket Drive | Alloy Steel Trivalent Zinc (100 / Pkg.)

#4-40 X 1/2" Socket Cap Screws | Flat Head Hex Socket Drive | Alloy Steel - Main image
$13.07 $19.8 In stock

These #4-40 x 1/2" socket cap screws are manufactured from Alloy Steel with a trivalent zinc finish, featuring a hex socket drive and a flat head. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel, Trivalent Zinc finish
  • Drive: Hex Socket
  • Head style: Flat
  • Thread size: #4-40
  • Length: 1/2"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Trivalent Zinc
  • Head style: Flat
  • Drive type: Hex Socket
  • Thread size: #4-40
  • Length: 1/2"
  • Threads per inch: 40
  • Measurement type: Imperial
  • Pack quantity: 10 per package

Please note: This item is excess stock and is sold non-cancelable, non-refundable, and non-returnable. Please call us with any questions about this item before ordering.

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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 (4.4 / 5 · 5 reviews)

Stella R. ★★★★★

The heads sit flush in my jig holes without any wobble, and the trivalent zinc finish looks clean against the steel. Even after tightening a few down to spec, the hex sockets haven’t stripped at all. These are exactly what I needed for a solid batch of fixtures.

Scarlett ★★★★★

I needed a handful of these for a small jig I was building, and the trivalent zinc finish gave them a clean, corrosion-resistant look right out of the bag. They seated perfectly flush in the counterbore without any stripping.

William H. ★★★★★

The flat head sits flush with the surface, which was exactly what I needed for a tight jig assembly. The zinc finish on these #4-40 screws looks clean and seems durable. They threaded smoothly into the tapped holes without any binding.