Mutual Screw & Supply

HOLO-KROME 72156 3/8-16 X 7/8" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 72156 3/8-16 X 7/8" Socket Cap Screws | Hex Socket Drive | Alloy - Main image
$33.18 $44.84 In stock

These 3/8-16 x 7/8" 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
  • Drive: Socket Drive
  • Thread size: 3/8-16
  • Length: 7/8"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Socket Drive
  • Thread size: 3/8-16
  • Length: 7/8"
  • Threads per inch: 16
  • Measurement type: Inch
  • Pack quantity: 100 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 (4.4 / 5 · 5 reviews)

Isabella G. ★★★★★

Had to swap out some stripped bolts in a jig setup at the shop, and these black oxide screws threaded in smooth without any binding. The 3/8-16 pitch is spot on for that kind of precision work, and the pack of 100 gives me plenty of extras for future projects.

John K. ★★★★★

The hex drive seated perfectly into my socket wrench without any wobble, and the black oxide coating looks uniform across all 100 screws. Used them to rebuild a jig fixture and they held up under repeated torquing.

Amelia C. ★★★★★

I was worried about stripping out threads on a repair jig, but these cap screws held their torque perfectly even under some heavy wrenching. The black oxide finish feels durable and the hex drive engaged cleanly every time.