Mutual Screw & Supply

5/16-18 X 1-3/4" Socket Cap Screws | Low Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

5/16-18 X 1-3/4" Socket Cap Screws | Low Head Hex Socket Drive | Alloy Steel - Main image
$48.06 $77.52 In stock

These 5/16-18 x 1-3/4" 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 size: 5/16-18
  • Length: 1-3/4"
  • 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 size: 5/16-18
  • Length: 1-3/4"
  • 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 (3.8 / 5 · 5 reviews)

Penelope ★★★★★

I needed low head caps for a tight clearance on a jig, and these 5/16-18 x 1-3/4" screws fit perfectly with the hex socket drive making installation easy. The thermal black oxide coating looks consistent across all 100 pieces.

Natalie ★★★★☆

The thermal black oxide finish feels tough and consistent across all 100 pieces, which is exactly what I wanted for jig builds. Threads ran clean in my tapped holes without any binding. Only gripe is the low head profile takes a bit more care to seat a hex key, but that's the tradeoff for the cleara

Joseph K. ★★★★☆

The low head profile on these screws is perfect for tight clearance areas on my jig setup. They’re a bit pricier than standard hex bolts, but the alloy steel feels noticeably tougher.