Mutual Screw & Supply

MS21075L4 | Mil-Spec Self-Locking Nuts (100 / Pkg.)

MS21075L4 | Mil-Spec Self-Locking Nuts (100 / Pkg.) - Main image
$156.4 $226.67 In stock

These self-locking nuts are well suited to securing fasteners against vibration loosening.

  • Applications: Securing fasteners against vibration loosening

Specifications

  • Product type: Self-Locking Nuts
  • 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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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)

Charlotte J. ★★★★★

Used a handful of these on a shaky lawnmower bracket and none of them budged a bit after a week of hard use. The six-lobe collar really digs in and keeps everything snug without needing a lock washer.

Ava ★★★★★

Used these on a trailer hitch project and the nylon insert gripped perfectly even after a few rounds of tightening. Held steady through a bumpy test drive with no loosening at all.

Edward F. ★★★★★

Installed these on my motorcycle's handlebar clamps and they held perfectly through a bumpy ride. The self-locking design really does take the worry out of vibration loosening.