Mutual Screw & Supply

#4-40 X 9/16" Machine Screws | Flat Head Phillips Drive | Steel Trivalent Zinc (400 / Pkg.)

#4-40 X 9/16" Machine Screws | Flat Head Phillips Drive | Steel Trivalent Zinc - Main image
$14.26 $19.8 In stock

These #4-40 x 9/16" 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: 9/16"
  • 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: 9/16"
  • Threads per inch: 40
  • Measurement type: Imperial
  • Pack quantity: 200 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 (5.0 / 5 · 5 reviews)

James L. ★★★★★

Went right into a pre-tapped hole on my control panel without any binding issues, and the flat head sat flush perfectly. The trivalent zinc coating seems sturdy enough to resist surface rust in my basement workshop. Just what I needed for mounting a small relay board.

Kevin ★★★★★

The threads cut cleanly into my steel brackets without a single stripped head, and the zinc finish looks uniform across all 400. Flat heads sit flush like they’re supposed to, which made panel assembly way less fiddly than I feared.

Lucy T. ★★★★★

I needed exactly 400 for a project I'm working on, so the quantity was perfect. The Phillips drive let me get these small screws seated quickly without stripping.