Mutual Screw & Supply

MS21042-5 | Mil-Spec Self-Locking Nuts | Steel (50 / Pkg.)

MS21042-5 | Mil-Spec Self-Locking Nuts | Steel (50 / Pkg.) - Main image
$16.38 $26 In stock

These self-locking nuts are manufactured from Steel. They are well suited to securing fasteners against vibration loosening.

  • Material and finish: Steel
  • Applications: Securing fasteners against vibration loosening

Specifications

  • Product type: Self-Locking Nuts
  • Material: Steel
  • Finish: Plain
  • Measurement type: Imperial
  • Pack quantity: 50 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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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 (4.6 / 5 · 5 reviews)

Adam ★★★★★

Took a handful of these to lock down a motor mount, and the self-locking action held firm even after a day of hard vibration. The steel finish feels rugged, and the pack of 50 means I've got plenty left for the next job.

Madison C. ★★★★★

Used a dozen of these on a bracket that sees constant vibration, and none have backed off even a quarter turn. The steel construction gives them a reassuringly solid feel when you wrench them down. Exactly what I needed for a mil-spec application.

Charlotte ★★★★★

Put a set of these on the suspension bolts of my off-road trailer, and they haven't budged an inch after a weekend of washboard roads. The steel construction feels solid, and the nylon insert locks down tight without galling the threads. Exactly what I needed to keep critical fasteners from vibratin