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Hillman 3/8 in. Zinc-Plated Steel SAE Nylon Lock Nut, 100-Pack

Regular price $20.99

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

Secure assemblies against vibration with Hillman SAE nylon lock nuts. Made of zinc-plated steel with a nylon insert, they provide durable corrosion resistance and consistent hold for automotive and general hardware projects.


Key Features:

  • Secure Grip: Nylon insert locks onto threads to resist loosening from vibration
  • Corrosion Resistant: Zinc-plated steel construction withstands rust and wear
  • Fine Thread Precision: 3/8-24 SAE fine thread for tight, reliable fit
  • Bulk Value: 100-piece pack ideal for shops and repeat projects
  • Versatile Use: Suitable for automotive, machinery, and home repair applications

Specifications Table:

Specification Details
Brand Name Hillman
Callout Size 3/8 inch
Thread Size 3/8-24
Thread Type Fine
Unit of Measurement SAE
Finish Zinc Plated
Material Steel with nylon insert
Number in Package 100 pack
Packaging Type Boxed
Package Height 2 in
Package Width 3.5 in
Package Length 3.4 in
Package Weight 1.9 lbs

Frequently Asked Questions (FAQ):

Q: What thread size are these lock nuts?
A: They are 3/8-24 SAE fine thread.


Q: Do I need lock washers with these?
A: No. The nylon insert provides the locking action, eliminating the need for lock washers.


Q: Are they suitable for outdoor use?
A: Yes. The zinc-plated steel offers corrosion resistance for many indoor and outdoor applications.


Q: How are these packaged?
A: Boxed retail package containing 100 pieces.


Q: Can they be reused?
A: They can be threaded on and off, but repeated reuse can reduce the nylon insert’s locking effectiveness; replace if grip weakens.


Industrial polish with dependable hold

These zinc-plated lock nuts bring a clean, silvery finish to functional hardware, marrying utility with understated style. The faceted profile and nylon insert offer a tailored fit that feels precise and purposeful. Use them to streamline open-shelf frames or custom metal legs where hardware becomes part of the aesthetic. A small detail with big impact—essential for refined, long-lasting builds.


Choose Hillman’s 100-pack nylon lock nuts for a secure, corrosion-resistant hold that keeps every project tight and reliable.

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