Mutual Screw & Supply

#4-40 X 5/16" Internal Tooth SEMS Sem Screws | Pan Head Phillips Drive | Steel Black Oxide (5000 / Pkg.)

#4-40 X 5/16" Internal Tooth SEMS Sem Screws | Pan Head Phillips Drive | Steel - Main image
$121.72 $193.2 In stock

These #4-40 x 5/16" sem screws are manufactured from Steel with a black oxide finish, featuring a phillips drive and a pan head. They are well suited to general fastening and assembly work.

  • Material and finish: Steel, Black Oxide finish
  • Drive: Phillips
  • Head style: Pan
  • Thread size: #4-40
  • Length: 5/16"
  • Applications: General fastening and assembly work

Specifications

  • Product type: Sem Screws
  • Material: Steel
  • Finish: Black Oxide
  • Head style: Pan
  • Drive type: Phillips
  • Thread size: #4-40
  • Length: 5/16"
  • Threads per inch: 40
  • Measurement type: Imperial
  • Features: Internal Tooth; SEMS
  • Pack quantity: 5000 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 · 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)

Leo ★★★★★

Exactly the right size for my PCB mounting needs, and the internal tooth lock washer saved me from having to add separate hardware. The Phillips drive seated cleanly without any cam-out, even driving into steel. These will last me through several projects.

Emily S. ★★★★★

The black oxide finish on these screws is really consistent, no bare metal showing through. They drive in cleanly with a #1 Phillips bit and hold tight without stripping.

Evelyn U. ★★★★★

Finally found a source that sells these little guys in a 5000-count box, so I don't have to order every few weeks. The pan head sits flush on my control panels, and the Phillips drive hasn't stripped once during assembly.