Mutual Screw & Supply

1-3/8-12 X 4-1/2" Socket Cap Screws | Hex Socket Drive | Partially Threaded | Alloy Steel Thermal Black Oxide

1-3/8-12 X 4-1/2" Socket Cap Screws | Hex Socket Drive | Partially Threaded | - Main image
$52.29 $69.72 In stock

These 13/8-12 x 4-1/2" 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: 13/8-12
  • Length: 4-1/2"
  • 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: 13/8-12
  • Length: 4-1/2"
  • Threads per inch: 12
  • Measurement type: Inch
  • Pack quantity: 1 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 (4.6 / 5 · 5 reviews)

Stella F. ★★★★★

Used these on a custom jig and the hex socket drive grabbed perfectly without any stripping. The thermal black oxide finish looks solid and should resist rust in the shop well.

Samuel D. ★★★★★

I needed bolts that could handle heavy clamping force in a jig, and these partially threaded screws gripped perfectly without stripping. The black oxide finish feels durable and hasn't shown any wear after repeated use.

Stella Z. ★★★★★

Installed these on a heavy jig and the hex socket drive took torque without stripping. The thermal black oxide finish looks clean and seems like it’ll resist corrosion well.