Mutual Screw & Supply

#4-40 X 3/8" Machine Screws | Fillister Head Phillips Drive | Steel Trivalent Zinc (2000 / Pkg.)

#4-40 X 3/8" Machine Screws | Fillister Head Phillips Drive | Steel Trivalent - Main image
$48 $67.6 In stock

These #4-40 x 3/8" machine screws are manufactured from Steel with a trivalent zinc finish, featuring a phillips drive and a fillister head. They are well suited to fastening metal parts, panels, and enclosures.

  • Material and finish: Steel, Trivalent Zinc finish
  • Drive: Phillips
  • Head style: Fillister
  • Thread size: #4-40
  • Length: 3/8"
  • Applications: Fastening metal parts, panels, and enclosures

Specifications

  • Product type: Machine Screws
  • Material: Steel
  • Finish: Trivalent Zinc
  • Head style: Fillister
  • Drive type: Phillips
  • Thread size: #4-40
  • Length: 3/8"
  • Threads per inch: 40
  • Measurement type: Imperial
  • 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: 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 (5.0 / 5 · 5 reviews)

George J. ★★★★★

I was pleasantly surprised at how consistent the thread quality is across all 2,000 screws—no binding or cross-threading issues during assembly. The trivalent zinc finish gives them a clean, corrosion-resistant look that works perfectly for my panel fastening projects.

Nicholas H. ★★★★★

These fillister heads sit perfectly flush in the counterbores I'm using, and the trivalent zinc finish looks clean and uniform across all 2000 pieces.

Brian ★★★★★

I needed a bulk box for a panel assembly job and these fillister heads are perfect for countersunk holes—the Phillips drive bites cleanly without slipping. All 2000 came in the package, threads were consistent, and the zinc finish looks uniform across every screw.