Mutual Screw & Supply

HOLO-KROME 730002140 7/16-20 X 3-1/2" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (25 / Pkg.)

HOLO-KROME 730002140 7/16-20 X 3-1/2" Socket Cap Screws | Hex Socket Drive | - Main image
$34.16 $48.11 In stock

These 7/16-20 x 3-1/2" 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
  • Drive: Socket Drive
  • Thread size: 7/16-20
  • Length: 3-1/2"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Socket Drive
  • Thread size: 7/16-20
  • Length: 3-1/2"
  • Threads per inch: 20
  • Measurement type: Inch
  • Pack quantity: 25 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 (4.2 / 5 · 5 reviews)

Victoria E. ★★★★★

The black oxide finish on these screws really holds up well; I’ve been using them in a fixture build and they haven’t shown any wear. The hex socket drive makes installation quick and secure with an Allen key. For precision assemblies, the 3-1/2" length is spot on for my needs.

Kevin B. ★★★★★

Used these to repair a broken jig on my mill, and the 7/16-20 threads seated perfectly without any binding. The alloy steel feels solid enough for heavy clamping loads I'm putting on them.

Madison ★★★★★

Finally, a bolt that threads in smoothly without that annoying wobble. The black oxide finish on these alloy steel screws looks great and feels solid for my fixture builds.