Mutual Screw & Supply

5/16-18 X 7/8" Socket Cap Screws | Hex Socket Drive | Nylon Patch | Fully Threaded | Alloy Steel Thermal Black Oxide (100 / Pkg.)

5/16-18 X 7/8" Socket Cap Screws | Hex Socket Drive | Nylon Patch | Fully - Main image
$36.34 $51.19 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
  • 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
  • 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: 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 (5.0 / 5 · 5 reviews)

Violet ★★★★★

Used these for a couple of tooling fixtures and the nylon patch held tight without any loosening under vibration. The black oxide finish looks clean and seems to resist minor scuffs well.

Adam ★★★★★

Installing these in a jig setup was straightforward thanks to the hex socket drive taking torque nicely without stripping. The nylon patch on the threads is a nice touch, helping them stay put under vibration.

Timothy L. ★★★★★

The black oxide finish really minimizes glare when I’m working under bright shop lights, which is a nice bonus. These hold tight in my drill press jig without any loosening, and the nylon patch saves time fiddling with thread locker.