Mutual Screw & Supply

HOLO-KROME 60080 5/16-18 X 1" Socket Cap Screws | Flat Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 60080 5/16-18 X 1" Socket Cap Screws | Flat Head Hex Socket Drive | - Main image
$28.79 $47.98 In stock

These 5/16-18 x 1" 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: 5/16-18
  • Length: 1"
  • 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: 5/16-18
  • Length: 1"
  • Threads per inch: 18
  • Measurement type: Inch
  • 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 (4.8 / 5 · 5 reviews)

Hazel ★★★★★

The thermal black oxide finish is way more durable than the raw zinc ones I've used before—scraped a wrench across one while torquing and it didn't flake at all. Threads seated smoothly in both steel and aluminum. Pack of 100 is going to last me through several build projects.

Charlotte ★★★★★

Installed a dozen of these into a jig plate and the hex socket drive grabbed perfectly without any cam-out. The 100-count package means I’ve got plenty left for future projects.

Ella X. ★★★★★

The black oxide finish on these screws is exactly what I needed for a jig I’m building—they slide into the countersink cleanly and the socket drive grips the wrench without any stripping. Pack of 100 is solid value for precision work, and the alloy steel feels sturdy right out of the box.