Mutual Screw & Supply

HOLO-KROME 72120 5/16-18 X 1/2" Socket Cap Screws | Hex Socket Drive | Excess Stock | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 72120 5/16-18 X 1/2" Socket Cap Screws | Hex Socket Drive | Excess - Main image
$12.47 $19.8 In stock

These 5/16-18 x 1/2" socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Drive: Hex Socket Drive
  • Thread size: 5/16-18
  • Length: 1/2"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread size: 5/16-18
  • Length: 1/2"
  • Threads per inch: 18
  • Measurement type: Inch
  • Pack quantity: 100 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: Handling (business days) 0–1; Transit (business days) 7–15.

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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Returning an item

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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 (4.8 / 5 · 5 reviews)

Eva ★★★★★

Used a handful of these for a jig build and the hex socket drive grabs perfectly with no stripping. The black oxide finish adds a touch of corrosion resistance for my shop environment.

John ★★★★★

The black oxide finish on these screws resisted scratches well during assembly, and the hex drive seated perfectly every time. I used them for a jig rebuild and didn't have a single stripped head.

Christopher K. ★★★★★

Really solid fasteners with clean threading across all 100 pieces—every one seated without any binding in the tapped holes I used them on. The black oxide finish looks uniform and should resist light rust in the shop.