Mutual Screw & Supply

#4-40 X 1/4" Socket Cap Screws | Flat Head Hex Socket Drive | 18/8 Stainless Steel (2000 / Pkg.)

#4-40 X 1/4" Socket Cap Screws | Flat Head Hex Socket Drive | 18/8 Stainless - Main image
$26.5 $36.8 In stock

These #4-40 x 1/4" socket cap screws are manufactured from 18/8 Stainless Steel, featuring a hex socket drive and a flat head. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: 18/8 Stainless Steel
  • Drive: Hex Socket
  • Head style: Flat
  • Thread size: #4-40
  • Length: 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
  • Head style: Flat
  • Drive type: Hex Socket
  • Thread size: #4-40
  • Length: 1/4"
  • Threads per inch: 40
  • Measurement type: Imperial
  • Pack quantity: 2000 per package

Please note: This item is excess stock and is sold non-cancelable, non-refundable, and non-returnable. Please call us with any questions about this item before ordering.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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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)

Mia ★★★★★

I needed 18/8 stainless steel for a small jig I was building, and these flat heads fit flush and look clean. The 2000 count is more than I'll use, but the price per screw is hard to beat.

Michael L. ★★★★★

The hex socket drives make these perfect for tight spaces, and the 18/8 stainless steel feels more robust than I expected for such a small screw. I've been using them to build custom jigs, and they hold firm without stripping—exactly what I needed for precision work.

Scarlett P. ★★★★★

I bought a bulk pack for a small robotics project and the 18/8 stainless steel feels solid—no rust after a few weeks in a slightly humid shop. The hex socket drive made them easy to tighten in tight spaces.