Mutual Screw & Supply

#4-40 X 1/4" Undercut Machine Screws | Flat Head Phillips Drive | 18/8 Stainless Steel Black Oxide (2000 / Pkg.)

#4-40 X 1/4" Undercut Machine Screws | Flat Head Phillips Drive | 18/8 - Main image
$29.24 $46.42 In stock

These #4-40 x 1/4" machine screws are manufactured from 18/8 Stainless Steel with a black oxide finish, featuring a phillips drive and a flat head. They are well suited to fastening metal parts, panels, and enclosures.

  • Material and finish: 18/8 Stainless Steel, Black Oxide finish
  • Drive: Phillips
  • Head style: Flat
  • Thread size: #4-40
  • Length: 1/4"
  • Applications: Fastening metal parts, panels, and enclosures

Specifications

  • Product type: Machine Screws
  • Material: 18/8 Stainless Steel
  • Finish: Black Oxide
  • Grade: 18/8
  • Head style: Flat
  • Drive type: Phillips
  • Thread size: #4-40
  • Length: 1/4"
  • Threads per inch: 40
  • Measurement type: Imperial
  • Features: Undercut
  • 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 · 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)

Mia C. ★★★★★

Exactly the right length for mounting control panels inside enclosures, and the undercut really helps keep them from loosening up over time. I’ve used a few hundred so far without a single stripped head or broken bit.

Natalie D. ★★★★★

The black oxide finish looks sharp and held up well against scratches while I was tightening them into a metal panel. The 18/8 stainless steel gives me confidence they won’t corrode, and the Phillips heads seated cleanly with no stripping issues across the full 2000-count box.

Hannah F. ★★★★★

Just finished a project securing some thin metal panels and these little screws grabbed perfectly without stripping. The flat head sits flush and the Phillips drive made installation a breeze.