Mutual Screw & Supply

NAS1640-2 | Mil-Spec Lock Washers (25 / Pkg.)

NAS1640-2 | Mil-Spec Lock Washers (25 / Pkg.) - Main image
$6.6 $10 In stock

These lock washers are well suited to preventing fastener loosening under vibration.

  • Applications: Preventing fastener loosening under vibration

Specifications

  • Product type: Lock Washers
  • Measurement type: Imperial
  • Pack quantity: 25 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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If you need a refund

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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 (4.8 / 5 · 5 reviews)

Penelope ★★★★★

I needed a reliable fix for some loose bolts in my trailer, and these lock washers really grabbed hold. The split design creates solid tension even under heavy road vibration.

Sebastian B. ★★★★★

The teeth on these washers bit into the bolt head just as described, and so far none of the fasteners have loosened on my trailer hitch. Exactly what you need for a shaky application.

Ryan ★★★★★

Used these on a steel bracket assembly that sees a lot of shaking, and every fastener stayed tight after a week of run time. The mil-spec finish feels tough and the 25-count pack gives you plenty for a small job.