Mutual Screw & Supply

5/16 Internal Tooth Lock Washers | 410 Stainless Steel (400 / Pkg.)

5/16 Internal Tooth Lock Washers | 410 Stainless Steel (400 / Pkg.) - Main image
$7.2 $10 In stock

These #5 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: #5
  • Applications: Preventing fastener loosening under vibration

Specifications

  • Product type: Lock Washers
  • Material: 410 Stainless Steel
  • Finish: Plain
  • Grade: 410
  • Thread size: #5
  • 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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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)

Scarlett ★★★★★

The 410 stainless held up perfectly on my exhaust bracket—no rust after a month of rain, and they bit into the bolt head just enough to stay put. A full 400 pack means I’ll have spares for years, which is a solid deal for the price.

Christopher J. ★★★★★

I’ve been using these #5 lock washers on a few small engine projects, and the internal teeth really bite into the bolt head to stop any loosening. The 410 stainless steel feels tough and corrosion-resistant, especially for damp conditions. For the price, getting 400 in a pack is a solid value—defini

Zoe ★★★★☆

The 410 stainless steel feels sturdy, and these lock washers held tight when I used them on a small motor mount. Only mild complaint is the package is a bit bulky for storage.