Mutual Screw & Supply

HOLO-KROME 87050 M4-0.7 X 40mm Socket Cap Screws | Flat Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 87050 M4-0.7 X 40mm Socket Cap Screws | Flat Head Hex Socket Drive | - Main image
$43.56 $58.08 In stock

These M4-0.7 x 40mm socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Head style: Flat Head
  • Drive: Socket Drive
  • Thread size: M4-0.7
  • Length: 40mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Flat Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Socket Drive
  • Thread size: M4-0.7
  • Length: 40mm
  • Measurement type: Metric
  • Pack quantity: 100 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 (5.0 / 5 · 5 reviews)

Abigail ★★★★★

The black oxide finish on these screws makes them look clean and professional on my jig assembly, and the hex drive seated perfectly without any stripping. I’ve used about thirty so far and every one threaded smoothly into predrilled holes.

Emily J. ★★★★★

Bagged all hundred for a machine build and every single one threaded clean into tapped holes without a single dud. The black oxide finish gives them a nice grip for hex keys, and the flat heads sit flush exactly as they should.

John K. ★★★★★

Needed a full bag of 40mm M4s for a new jig setup, and every single one threaded clean without any galling. The black oxide coating feels properly slick and evenly applied, so they're going straight into service.