Mutual Screw & Supply

MS35335-57 | Mil-Spec Lock Washers | #4 (1000 / Pkg.)

MS35335-57 | Mil-Spec Lock Washers | #4 (1000 / Pkg.) - Main image
$32.72 $50.34 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: 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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If you need a refund

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Please contact us for the refund processing timeframe before returning an item.

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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 (4.6 / 5 · 5 reviews)

Ellie ★★★★★

Bought a thousand of these for a small engine rebuild and they held every bolt tight through a few hours of hard vibration. I like that they're mill-spec, so I trust them for anything moving.

Madison ★★★★★

The #4 size was exactly right for my 1/4-inch bolts, and the whole thousand-count bag feels like a solid value for shop stock. I’ve used them in a few high-vibration spots on my motorcycle, and they’ve held tight so far without any loosening.

Evelyn ★★★★★

These came in a sealed mil-spec bag and every single #4 washer looks clean and uniform. I’m using them on a small electronics chassis that sees constant vibration, and they’ve held perfectly so far. For the price per thousand, you just can’t beat the quality.