Mutual Screw & Supply

MS21044C8 | Mil-Spec Self-Locking Nuts (10 / Pkg.)

MS21044C8 | Mil-Spec Self-Locking Nuts (10 / Pkg.) - Main image
$9.97 $15.58 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: 10 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 (4.8 / 5 · 5 reviews)

David ★★★★★

Put these on a lawnmower blade bolt that kept backing off—not a single wiggle after a week of bumpy mowing. The nylon insert grips hard, and the zinc finish hasn’t shown any rust yet.

Lucy ★★★★★

These nuts lock down tight—I used them on a bracket that kept rattling loose, and they haven't budged since. The nylon insert really holds firm even after taking one on and off a couple times.

Nicholas U. ★★★★★

I was a bit skeptical about self-locking nuts, but these held a critical bracket on my motorcycle through a bumpy ride without any loosening. Each nut in the package of 10 feels solid and the locking mechanism engages firmly.