Mutual Screw & Supply

7/8-9 X 2-1/4" Socket Cap Screws | Hex Socket Drive | Nylon Patch | Partially Threaded | Alloy Steel Thermal Black Oxide (10 / Pkg.)

7/8-9 X 2-1/4" Socket Cap Screws | Hex Socket Drive | Nylon Patch | Partially - Main image
$78.75 $110.91 In stock

These 7/8-9 x 2-1/4" 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 style: Partially Threaded
  • 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: Hex Socket Drive
  • Thread style: Partially Threaded
  • 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 · 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)

Abigail E. ★★★★★

Used these to mount a jig that gets a lot of vibration, and the nylon patch holds them tight without needing threadlocker. Black oxide coating looks good and seems to resist rust better than I expected.

Charlotte ★★★★★

The nylon patch locking feature is a nice touch—these screws held fast on a jig without needing a separate thread locker. The black oxide finish looks clean and professional against the steel.

Timothy H. ★★★★★

Used a set on a jig I was building and the partially threaded design made alignment much easier than fully threaded screws would have. The black oxide finish looks clean and hasn't shown any wear after a few tightening cycles.