Mutual Screw & Supply

HOLO-KROME 720001177 1/4-20 X 4-1/2" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (50 / Pkg.)

HOLO-KROME 720001177 1/4-20 X 4-1/2" Socket Cap Screws | Hex Socket Drive | - Main image
$46.32 $65.24 In stock

These 1/4-20 x 4-1/2" 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: 1/4-20
  • 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: Socket Drive
  • Thread size: 1/4-20
  • Length: 4-1/2"
  • Threads per inch: 20
  • Measurement type: Inch
  • Pack quantity: 50 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 (4.8 / 5 · 5 reviews)

Charlotte ★★★★★

The hex drive on these cap screws made tightening them into a tight spot on my tooling fixture much easier than using a regular bolt. The black oxide finish seems durable and hasn’t chipped during assembly.

Owen ★★★★★

Swapping out some old machine screws for these black oxide ones made my jig setup look a lot cleaner. The 4-1/2 inch length was just right for a custom tooling fixture I was building.

Lily ★★★★★

These are the real deal for any serious machine work. The black oxide finish gives them a nice, consistent look and seems to resist rust well out of the package. Exactly the quality you need for jig and fixture building.