Mutual Screw & Supply

5/16 Internal Tooth Lock Washers | Steel Trivalent Zinc (5000 / Pkg.)

5/16 Internal Tooth Lock Washers | Steel Trivalent Zinc (5000 / Pkg.) - Main image
$33.52 $45.3 In stock

These #5 lock washers are manufactured from Steel with a trivalent zinc finish. They are well suited to preventing fastener loosening under vibration.

  • Material and finish: Steel, Trivalent Zinc finish
  • Thread size: #5
  • Applications: Preventing fastener loosening under vibration

Specifications

  • Product type: Lock Washers
  • Material: Steel
  • Finish: Trivalent Zinc
  • Thread size: #5
  • Measurement type: Imperial
  • Pack quantity: 5000 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 (4.8 / 5 · 5 reviews)

Sofia L. ★★★★★

The trivalent zinc finish handles my shop’s humidity without a speck of rust, which is a huge relief for a 5000-pack. These #5s bite into the bolt head firmly and hold torque well under my drill’s vibration, exactly what I needed.

Edward A. ★★★★★

Finally found a bulk box that actually holds up under my workshop's constant vibration testing—the zinc coating on these is smooth and even, no flaking. They bite into the steel like they're supposed to, even after multiple tightening cycles.

Julian O. ★★★★★

Bought a full box for a batch of small assemblies, and the trivalent zinc finish on these is more consistent than what I've seen from other suppliers. They bite down evenly without distorting.