Mutual Screw & Supply

#4-40 X 3/8" Machine Screws | Round Head Slotted Drive | Steel Zinc Plated (5500 / Pkg.)

#4-40 X 3/8" Machine Screws | Round Head Slotted Drive | Steel Zinc Plated - Main image
$13.66 $19.8 In stock

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

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

Specifications

  • Product type: Machine Screws
  • Material: Steel
  • Finish: Zinc Plated
  • Head style: Round
  • Drive type: Slotted
  • Thread size: #4-40
  • Length: 3/8"
  • Threads per inch: 40
  • Measurement type: Imperial
  • Pack quantity: 1000 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 (4.8 / 5 · 5 reviews)

Aurora S. ★★★★★

Picked up a 5500-count box for a batch of small electronics enclosures and every single screw threads perfectly with no burrs. The slotted drive is easy to use with a hand driver, and the consistent quality saves a lot of hassle compared to cheaper packs I've tried.

Eva ★★★★★

The zinc plating on these #4-40 screws gives them a nice, consistent finish that doesn't flake off during installation. I used them to secure some metal brackets in a tight spot, and the round head sat flush without binding. Exactly what I needed for a clean, solid hold.

Abigail F. ★★★★★

The slotted heads on these #4-40 screws catch the driver perfectly every time, and the zinc plating looks clean on my metal enclosure panels. At this price for 5,500, I won't need to restock for years.