Mutual Screw & Supply

HOLO-KROME 72340 7/8-9 X 2-1/4" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (10 / Pkg.)

HOLO-KROME 72340 7/8-9 X 2-1/4" Socket Cap Screws | Hex Socket Drive | Alloy - Main image
$47.85 $67.4 In stock

These 7/8-9 x 2-1/4" 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: 7/8-9
  • Length: 2-1/4"
  • 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: 7/8-9
  • Length: 2-1/4"
  • Threads per inch: 9
  • Measurement type: Inch
  • Pack quantity: 10 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 (4.6 / 5 · 5 reviews)

Adam D. ★★★★★

Wrapped a few of these into a jig at work and they seated perfectly — the hex drive grabbed without any slip. The black oxide coating gave them a nice, even finish that should resist rust well enough in our shop.

Isabella ★★★★★

I needed these for a jig I'm building and the hex socket drive made installation straightforward even in a tight spot. The alloy steel feels solid and the black oxide finish looks like it'll hold up well.

John ★★★★★

Threads were clean and the black oxide finish looks sharp on my fixture table. The 7/8-9 thread engagement feels rock solid, and the hex socket drive seated perfectly with no wobble. These are going to hold up way better than the grade 5s I was using before.