Mutual Screw & Supply

HOLO-KROME 87218 M16-2 X 55mm Socket Cap Screws | Flat Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (25 / Pkg.)

HOLO-KROME 87218 M16-2 X 55mm Socket Cap Screws | Flat Head Hex Socket Drive | - Main image
$63.45 $91.96 In stock

These M16-2 x 55mm 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: M16-2
  • Length: 55mm
  • 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: M16-2
  • Length: 55mm
  • Measurement type: Metric
  • Pack quantity: 25 per package
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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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)

Steven ★★★★★

The hex socket drive made tightening these down in tight spots on my fixture much easier than using a hex key on a standard bolt. They seated flush and the black oxide finish looks clean.

Ava D. ★★★★★

Installed these in a jig for a production run and the hex socket drive handled my torque wrench without any stripping. The M16-2 threads seated perfectly in the pre-tapped holes—solid fit.

Charlotte C. ★★★★★

The black oxide finish on these screws handled a greasy assembly line without any rust spots, and the hex socket drive made installation a breeze. I’ve used them for a small press rebuild, and they fit perfectly without any stripping.