Mutual Screw & Supply

MS21044N4 | Mil-Spec Self-Locking Nuts (250 / Pkg.)

MS21044N4 | Mil-Spec Self-Locking Nuts (250 / Pkg.) - Main image
$70.15 $115 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: 250 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)

Ella I. ★★★★★

Used a handful of these on my truck's suspension mounts, and they held tight even after a day on rough trails. The nylon insert locks down securely without needing to overtighten, which is exactly what I wanted.

Sophia ★★★★★

Got these for a farm gate hinge that kept shaking loose, and the nylon insert locks tight without stripping the threads. They held perfectly through a week of heavy wind and daily use. Exactly what I needed for vibration-prone spots.

Samuel Z. ★★★★★

I needed a solid solution for keeping bolts tight on my off-road bumper, and these self-locking nuts gripped right away without any extra tools. The nylon insert held firm even after a bumpy test drive.