Mutual Screw & Supply

5/16-18 X 7/8" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | Alloy Steel Thermal Black Oxide (200 / Pkg.)

5/16-18 X 7/8" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded - Main image
$33.78 $46.92 In stock

These 5/16-18 x 7/8" 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
  • Head style: Flat Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 7/8"
  • 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: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 7/8"
  • Threads per inch: 18
  • Measurement type: Inch
  • Pack quantity: 200 per package
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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)

Eva S. ★★★★★

Pulled these out to replace some worn bolts on a jig at work and the black oxide finish is holding up nicely. The flat head sits flush just like I needed, and all 200 came perfectly threaded.

John C. ★★★★★

The hex socket drive bit snugged perfectly into my torque wrench, and the black oxide finish hasn't shown a single spot of rust after a week in a damp machine shop.

Henry ★★★★★

Used a handful of these for a custom jig build, and the hex socket drive made installation in tight spots surprisingly easy. The 200-count box will last me through plenty of projects.