Mutual Screw & Supply

#4-40 X 3/8" Type 23 Thread Cutting Screws | Flat Head Phillips Drive | Steel Trivalent Zinc (200 / Pkg.)

#4-40 X 3/8" Type 23 Thread Cutting Screws | Flat Head Phillips Drive | Steel - Main image
$8.06 $11.35 In stock

These #4-40 x 3/8" thread cutting screws are manufactured from Steel with a trivalent zinc finish, featuring a phillips drive and a flat head. They are well suited to general fastening and assembly work.

  • Material and finish: Steel, Trivalent Zinc finish
  • Drive: Phillips
  • Head style: Flat
  • Thread size: #4-40
  • Length: 3/8"
  • Applications: General fastening and assembly work

Specifications

  • Product type: Thread Cutting Screws
  • Material: Steel
  • Finish: Trivalent Zinc
  • Head style: Flat
  • Drive type: Phillips
  • Thread size: #4-40
  • Length: 3/8"
  • Threads per inch: 40
  • Thread type: Type 23
  • 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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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 (4.8 / 5 · 5 reviews)

James ★★★★★

Cut these into some thin steel brackets for a small repair project, and the self-tapping tip started threads cleanly without any pilot hole. The flat head sat flush nicely, and the trivalent zinc finish seems like it’ll resist rust well.

Victoria T. ★★★★★

The Phillips drive engaged perfectly with my bit and cut clean threads into thin steel without stripping. These are exactly what I needed for a small electronics chassis project.

Hannah X. ★★★★★

I was glad these came in a 200-count pack because I needed extras for a few small projects. The trivalent zinc coating seems sturdy and gives them a clean look. They drove in smoothly with a standard Phillips bit.