Mutual Screw & Supply

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

5/16-18 X 5/8" Socket Cap Screws | Button Head Hex Socket Drive | Nylon Pellet - Main image
$197.51 $329.18 In stock

These 5/16-18 x 5/8" 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: Button Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 5/8"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Button Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 5/8"
  • Threads per inch: 18
  • Measurement type: Inch
  • Pack quantity: 100 per package
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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)

Penelope ★★★★★

Needed some for a fixture repair and these fit perfectly. The hex socket drive made installation quick with a standard Allen key.

Avery ★★★★★

Installed these on a jig I'm building and the black oxide finish looks great and resists wear. The hex socket drive made them easy to seat with just an Allen wrench.

Abigail B. ★★★★★

The nylon pellet locking feature is a game-changer for keeping these screws tight on my milling jig. Black oxide finish looks clean and the hex drive seated perfectly with my allen wrench. Exactly the right length for mounting plates without bottoming out.