Mutual Screw & Supply

HOLO-KROME 78100 3/8-16 X 1-1/4" Socket Cap Screws | Hex Socket Drive | 18/8 Stainless Steel (100 / Pkg.)

HOLO-KROME 78100 3/8-16 X 1-1/4" Socket Cap Screws | Hex Socket Drive | 18/8 - Main image
$131.87 $193.93 In stock

These 3/8-16 x 1-1/4" socket cap screws are manufactured from 18/8 Stainless Steel, featuring a socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: 18/8 Stainless Steel
  • Drive: Socket Drive
  • Thread size: 3/8-16
  • Length: 1-1/4"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: 18/8 Stainless Steel
  • Finish: Plain
  • Grade: 18/8
  • Drive type: Socket Drive
  • Thread size: 3/8-16
  • Length: 1-1/4"
  • Threads per inch: 16
  • Measurement type: Inch
  • Pack quantity: 100 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)

Victoria Y. ★★★★★

Picked up a pack for a custom tooling fixture and the hex socket drive seated perfectly with no stripping on the first few installs. The 18/8 stainless finish is clean and uniform across all 100 pieces, which is exactly what I need for repeated disassembly. Solid buy for precision work.

Ella V. ★★★★★

I used these on a precision jig build and the 18/8 stainless steel gives me confidence they won't corrode over time. The threads cut cleanly and seated perfectly, no binding at all.

Ava ★★★★★

Picked up a pack for some jig work I’ve been putting off, and these 3/8-16 screws fit perfectly into the tapped holes without any binding. The hex socket drive made installation quick with a standard Allen key, and the 18/8 stainless steel feels solid enough for repeated adjustments.