Mutual Screw & Supply

3/8 External Tooth Lock Washers | 410 Stainless Steel (350 / Pkg.)

3/8 External Tooth Lock Washers | 410 Stainless Steel (350 / Pkg.) - Main image
$6.8 $10 In stock

These #3 lock washers are manufactured from 410 Stainless Steel. They are well suited to preventing fastener loosening under vibration.

  • Material and finish: 410 Stainless Steel
  • Thread size: #3
  • Applications: Preventing fastener loosening under vibration

Specifications

  • Product type: Lock Washers
  • Material: 410 Stainless Steel
  • Finish: Plain
  • Grade: 410
  • Thread size: #3
  • 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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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)

Chloe ★★★★★

Used a handful of these on a vibrating saw blade guard assembly and they haven't loosened at all after a week of heavy use. The sharp external teeth grab the surface much better than standard flat washers.

Emily ★★★★★

The 410 stainless steel really holds up—no rust after a few weeks on outdoor equipment. The external teeth bite into the surface noticeably well, and a 350-count pack means I've got plenty left for future projects.

Ella I. ★★★★★

Been using these lock washers on a few small projects and they hold tight even on a vibrating saw blade. The stainless feels sturdy and the external teeth really dig in.