Mutual Screw & Supply

5/16-18 X 2-1/4" Knurled Cup Point Socket Set Screws | Alloy Steel (100 / Pkg.)

5/16-18 X 2-1/4" Knurled Cup Point Socket Set Screws | Alloy Steel (100 / Pkg.) - Main image
$103.1 $156.21 In stock

5/16-18 x 2 1/4" knurled cup point socket set screws in Alloy Steel, with a hex socket drive for high-torque adjustment in tight spaces.

  • Hex socket drive
  • Knurled Cup Point tip
  • Alloy Steel construction

Specifications

  • Thread Size: 5/16-18
  • Length: 2 1/4"
  • Point: Knurled Cup Point
  • Material: Alloy Steel
  • Package Quantity: 100
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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 (5.0 / 5 · 5 reviews)

Eva L. ★★★★★

Used these to lock a pulley onto a motor shaft where a standard wrench couldn't reach, and the hex socket drive made adjustment a breeze even in that cramped spot. The knurled cup point held firm after a full day of vibration, and the alloy steel feels plenty tough for the price.

Natalie D. ★★★★★

The knurled cup point grips the shaft firmly without marring it, which is exactly what I needed for a stubborn pulley setup. All 100 screws arrived with clean threads and consistent hex sockets, and at this price I’ll be stocking up again.

Claire ★★★★★

The hex socket drive made tightening these down in a tight bracket a breeze, and the knurled cup point held firm without slipping. Exactly what I needed for a stubborn alignment job.