Mutual Screw & Supply

#4-40 X 5/16" Machine Screws | Binding Head Slotted Drive | 18/8 Stainless Steel (1600 / Pkg.)

#4-40 X 5/16" Machine Screws | Binding Head Slotted Drive | 18/8 Stainless - Main image
$13.46 $19.8 In stock

These #4-40 x 5/16" machine screws are manufactured from 18/8 Stainless Steel, featuring a slotted drive and a binding head. They are well suited to fastening metal parts, panels, and enclosures.

  • Material and finish: 18/8 Stainless Steel
  • Drive: Slotted
  • Head style: Binding
  • Thread size: #4-40
  • Length: 5/16"
  • Applications: Fastening metal parts, panels, and enclosures

Specifications

  • Product type: Machine Screws
  • Material: 18/8 Stainless Steel
  • Finish: Plain
  • Grade: 18/8
  • Head style: Binding
  • Drive type: Slotted
  • Thread size: #4-40
  • Length: 5/16"
  • Threads per inch: 40
  • Measurement type: Imperial
  • Pack quantity: 100 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 (4.8 / 5 · 5 reviews)

Leo ★★★★★

I needed a bulk pack of small stainless steel fasteners for mounting control panels, and these #4-40 screws are exactly what I was looking for. The slotted drive works fine with a standard screwdriver, and the 18/8 stainless feels solid and corrosion-resistant.

Eva G. ★★★★★

The binding head sits flush against the panel without snagging, and the slotted drive gives a clean, positive engagement. Perfect for mounting brackets inside an equipment cabinet.

James L. ★★★★★

Was looking for something stronger than zinc for a small electronics enclosure repair, and these 18/8 stainless steel screws fit perfectly—no rust worries now. The slotted drive took a bit of getting used to, but the binding head holds panels flat without slipping. Exactly what I needed for a clean,