Mutual Screw & Supply

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

#4-40 X 1/2" Socket Cap Screws | Button Head Hex Socket Drive | Alloy Steel - Main image
$14.65 $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 button 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: Button
  • 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: Button
  • 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 (4.6 / 5 · 5 reviews)

Owen O. ★★★★★

I was pleasantly surprised by how precisely these button head screws fit into my jig fixtures — the hex socket drive grabs securely without stripping. The trivalent zinc finish looks clean and should resist corrosion well in my shop.

Thomas H. ★★★★★

The hex socket drive made tightening these into tight spots much easier than using a standard slotted screw. Zinc finish looks clean and consistent across all 100 pieces.

William ★★★★★

Finally got around to replacing some worn screws on my jig fixture, and these button heads fit the countersunk holes perfectly. The hex socket drive made installation quick, and the zinc finish looks clean.