Mutual Screw & Supply

HOLO-KROME 72170 3/8-16 X 2-1/2" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (50 / Pkg.)

HOLO-KROME 72170 3/8-16 X 2-1/2" Socket Cap Screws | Hex Socket Drive | Alloy - Main image
$22.74 $36.67 In stock

These 3/8-16 x 2-1/2" 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: 3/8-16
  • Length: 2-1/2"
  • 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: 3/8-16
  • Length: 2-1/2"
  • Threads per inch: 16
  • Measurement type: Inch
  • Pack quantity: 50 per package
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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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 (4.8 / 5 · 5 reviews)

Samuel ★★★★★

Threads were clean, no burs or gunk in the hex drive, and they seated perfectly in my jig fixture. The black oxide finish looks sharp and should handle shop oil fine. These are exactly what I expect for precision assembly work.

Scarlett T. ★★★★★

I needed a fastener that could hold up in my milling fixture, and these alloy steel screws are exactly what I was looking for. The hex socket drive made installation really smooth without stripping.

Sofia X. ★★★★★

The black oxide finish gives these screws a nice, uniform look, and the hex socket drive grips the allen key securely without any slipping. I used them to hold a fixture plate together and the threads seated cleanly into the tapped holes, so they’re doing the job perfectly so far.