Mutual Screw & Supply

1/4 Internal Tooth Lock Washers | 410 Stainless Steel Black Oxide (1000 / Pkg.)

1/4 Internal Tooth Lock Washers | 410 Stainless Steel Black Oxide (1000 / Pkg.) - Main image
$34.86 $55.33 In stock

These #1 lock washers are manufactured from 410 Stainless Steel with a black oxide finish. They are well suited to preventing fastener loosening under vibration.

  • Material and finish: 410 Stainless Steel, Black Oxide finish
  • Thread size: #1
  • Applications: Preventing fastener loosening under vibration

Specifications

  • Product type: Lock Washers
  • Material: 410 Stainless Steel
  • Finish: Black Oxide
  • Grade: 410
  • Thread size: #1
  • Measurement type: Imperial
  • Pack quantity: 1000 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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When it ships

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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 (4.4 / 5 · 5 reviews)

Sebastian ★★★★★

Used a handful of these on a trailer hitch bracket that rattles constantly, and they’ve held tight through a few hundred miles of gravel roads. The black oxide coating feels gritty and solid, and 410 stainless gives me peace of mind against corrosion.

Steven X. ★★★★★

I was worried about rust with regular washers in my damp shop, but these black oxide ones have held up perfectly after a month of use. The 410 stainless feels solid, and they bite into the fastener just as intended under vibration.

Daniel A. ★★★★★

Had a few small vibration-prone spots on my equipment, and these 1/4 black oxide lock washers did the trick. The 410 stainless steel feels solid, and a full pack of 1000 should cover any future needs.