Mutual Screw & Supply

3/8 Split Medium Lock Washers | Steel Black Oxide (200 / Pkg.)

3/8 Split Medium Lock Washers | Steel Black Oxide (200 / Pkg.) - Main image
$2.49 $3.83 In stock

These #3 lock washers are manufactured from Steel with a black oxide finish. They are well suited to preventing fastener loosening under vibration.

  • Material and finish: Steel, Black Oxide finish
  • Thread size: #3
  • Applications: Preventing fastener loosening under vibration

Specifications

  • Product type: Lock Washers
  • Material: Steel
  • Finish: Black Oxide
  • Thread size: #3
  • 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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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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Delivery costs

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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 (5.0 / 5 · 5 reviews)

David O. ★★★★★

The black oxide finish made these washers feel really solid and professional during my install, and they sat flat without any twisting. I needed a full 200 count for a project, so getting exactly the right quantity in one pack saved me a second order.

Scarlett L. ★★★★★

Used a full pack rebuilding an old milling machine and the black oxide finish held up perfectly during installation. The split action sits tight even on well-used threads, so no more worrying about vibration loosening.

Hannah ★★★★★

Had to replace a bunch of worn-out washers on an old machine and these held up perfectly during reassembly. The black oxide finish gives them a nice consistent look and they fit snug on the bolts without any wobble. I'm stocked on spares now for the next project.