Mutual Screw & Supply

#4-40 X 1/2" Machine Screws | Round Head Slotted Drive | Steel Zinc Plated (400 / Pkg.)

#4-40 X 1/2" Machine Screws | Round Head Slotted Drive | Steel Zinc Plated (400 - Main image
$13.86 $19.8 In stock

These #4-40 x 1/2" 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: 1/2"
  • 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: 1/2"
  • Threads per inch: 40
  • Measurement type: Imperial
  • Pack quantity: 50 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 (4.6 / 5 · 5 reviews)

Penelope ★★★★★

I needed exactly 400 of these for a panel assembly project, and every single screw threaded cleanly into the #4-40 nuts without any binding. The slotted drive heads let me use a standard screwdriver, which saved me from digging out my hex bits.

Andrew D. ★★★★★

The zinc plating is holding up nicely on these, and the slotted heads let me seat them flush without stripping. For the price, a 400-pack for this size is a solid deal if you go through these on enclosures regularly.

Andrew ★★★★★

I needed a small bag of these for a project and the 400-count box is honestly way more than I’d ever use, but the price is right. The slotted drive holds the screwdriver tip well without slipping, which helps when you're dealing with tight spots.