Mutual Screw & Supply

#4-40 X 1/2" Undercut Machine Screws | Flat Head Phillips Drive | 18/8 Stainless Steel Black Oxide (2000 / Pkg.)

#4-40 X 1/2" Undercut Machine Screws | Flat Head Phillips Drive | 18/8 - Main image
$41.38 $61.76 In stock

These #4-40 x 1/2" 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: 1/2"
  • 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: 1/2"
  • 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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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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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Natalie ★★★★★

The black oxide finish on these #4-40 screws gave my panel mounts a really clean, low-profile look, and the flat head sat flush without any annoying protrusions. They threaded smoothly into the tapped holes with no jamming.

William ★★★★★

I needed a bulk pack for a small electronics project, and these flat head screws seat perfectly flush into the panel holes. The Phillips drive bites cleanly without stripping, which is a huge time saver when you’re installing 2000 of them.

Ella O. ★★★★☆

Ordered these for a batch of custom metal brackets and the black oxide finish holds up well against minor scuffs. The Phillips drive seated nicely without stripping, which is always my worry with small screws. Just wish the package had a few more extras for the price.