3/8 in. USS Nylon Lock Nuts, Zinc-Plated Steel (100-Pack)

These Hillman nylon-insert stop nuts feature a zinc-plated steel body for strength with corrosion resistance, and a nylon insert that resists loosening from vibration. Ideal for general fastening where a secure, reusable lock is required.

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Key Features:

• Secure Locking: Nylon insert grips threads to prevent loosening from vibration—no lock washer needed
• Durable Build: Zinc-plated steel resists rust and corrosion for long service life
• Standard Sizing: 3/8-16 coarse thread, USS pattern for broad compatibility
• Bulk Value: 100 pieces per pack for shop and jobsite convenience

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Specifications Table:

Specification	Details
Brand	Hillman
Type	Nylon insert stop nut (lock nut)
Callout Size	3/8 inch
Thread Size	3/8-16
Thread Type	Coarse (USS)
Material	Steel with nylon insert
Finish	Zinc-plated
Unit of Measurement	USS
Number in Package	100 pack
Packaging Type	Boxed
Package Dimensions (L x W x H)	3.5 in x 3.3 in x 2.2 in
Package Weight	1.8 lb

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Frequently Asked Questions (FAQ):

Q: What thread size are these nuts?
A: They are 3/8-16 coarse thread (USS).

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Q: Do I still need a lock washer?
A: No. The nylon insert provides the locking action, eliminating the need for a separate lock washer.

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Q: What materials are these made from?
A: The nuts are steel with a zinc-plated finish and a nylon insert.

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Q: How many nuts are included?
A: 100 pieces per retail package.

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Q: Where should I use them?
A: Use anywhere vibration could loosen standard nuts—automotive, machinery, and general construction.

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Crisp, Industrial Restraint—That Stays Put

These zinc-kissed stop nuts bring a refined utility to any project, a subtle gleam that feels both deliberate and enduring. The nylon insert is the quiet hero—discreet yet unwavering—keeping your lines clean and your fixtures steady. Pair them with brushed hardware for a cohesive, tailored look across cabinetry or exposed shelving. Consider them the elegant anchor of a well-edited, luxe workspace.

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Lock in lasting performance—choose this 100-pack of Hillman nylon-insert lock nuts for your next project.