Mutual Screw & Supply

#4-40 X 5/16" Machine Screws | Flat Head Phillips Drive | Steel Trivalent Zinc (5000 / Pkg.)

#4-40 X 5/16" Machine Screws | Flat Head Phillips Drive | Steel Trivalent Zinc - Main image
$16.78 $23.63 In stock

These #4-40 x 5/16" machine screws are manufactured from Steel with a trivalent zinc finish, featuring a phillips drive and a flat head. They are well suited to fastening metal parts, panels, and enclosures.

  • Material and finish: Steel, Trivalent Zinc finish
  • Drive: Phillips
  • Head style: Flat
  • Thread size: #4-40
  • Length: 5/16"
  • Applications: Fastening metal parts, panels, and enclosures

Specifications

  • Product type: Machine Screws
  • Material: Steel
  • Finish: Trivalent Zinc
  • Head style: Flat
  • Drive type: Phillips
  • Thread size: #4-40
  • Length: 5/16"
  • Threads per inch: 40
  • Measurement type: Imperial
  • Pack quantity: 5000 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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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)

Sebastian X. ★★★★★

The trivalent zinc finish on these is flawless and matches perfectly with other zinc-plated hardware I have. For a 5,000-count pack, every single screw was clean and free of burrs, making them easy to drive into steel brackets.

Timothy ★★★★★

I needed a bulk pack of #4-40 screws for a metal enclosure project, and these flat heads with the Phillips drive work perfectly for securing panels. The trivalent zinc finish looks clean and should resist rust well.

Violet T. ★★★★★

The flat head sits perfectly flush in my aluminum enclosures, and the trivalent zinc finish looks clean and hasn't shown any rust after a few weeks. This bulk pack will last me through many projects.