Mutual Screw & Supply

#4-40 X 5/8" Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded | 316 Stainless Steel (1000 / Pkg.)

#4-40 X 5/8" Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded - Main image
$22.81 $36.2 In stock

These #4-40 x 5/8" socket cap screws are manufactured from 316 Stainless Steel, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: 316 Stainless Steel
  • Head style: Button Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #4-40
  • Length: 5/8"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Button Head
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Grade: 316
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #4-40
  • Length: 5/8"
  • Threads per inch: 40
  • Measurement type: Inch
  • Pack quantity: 1000 per package
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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 (4.6 / 5 · 5 reviews)

Carter ★★★★★

Finally, a hex socket cap screw that threads clean without any binding – these 316 stainless ones cut through aluminum like butter. The button head profile sits flush enough for tight jig work, and a thousand in the pack means I’m set for years.

Ruby S. ★★★★★

Packaging was secure and every single screw arrived clean and undamaged. The hex socket drive fits my wrench perfectly, making them a breeze to work with on tight assembly jigs.

Ruby I. ★★★★★

I needed fully threaded 316 stainless for a small jig I’m building, and these #4-40s are exactly right—no burrs on the threads, and the button head sits flush without stripping.