5/16 in. SAE Nylon Lock Nuts, Zinc-Plated (100-Pack)

These Hillman nylon-insert lock nuts feature a zinc-plated steel body for strength and corrosion resistance. The fine-thread SAE design with nylon insert resists loosening from vibration, eliminating the need for separate lock washers.

---

Key Features:

• Vibration Resistant: Nylon insert provides a secure, self-locking hold without lock washers
• Corrosion Protection: Zinc-plated steel construction helps guard against rust
• SAE Fine Thread: 5/16-24 fine thread for precise fastening in machinery and automotive projects
• Bulk Value Pack: 100 pieces per box for jobsite or shop replenishment
• Versatile Use: Ideal for securing bolts in applications subject to movement or vibration

---

Specifications Table:

Specification	Details
Callout Size	5/16 inch
Thread Size	5/16-24 (SAE fine)
Thread Type	Fine
Unit of Measurement	SAE
Material	Steel with nylon insert
Finish	Zinc plated
Number in Package	100
Packaging Type	Boxed
Package Height	2 in
Package Width	3 in
Package Length	3 in
Package Weight	1.3 lb

---

Frequently Asked Questions (FAQ):

Q: What thread size are these lock nuts?
A: They are 5/16-24 (SAE fine thread).

---

Q: Do I still need a lock washer with these?
A: No. The nylon insert provides the locking action, so a separate lock washer is not required.

---

Q: What materials are they made from?
A: They are made of steel with a zinc-plated finish and a nylon insert.

---

Q: Are these suitable for outdoor use?
A: The zinc plating offers basic corrosion resistance; for harsh or marine environments, consider stainless options.

---

Q: How many nuts come in the package?
A: 100 pieces per package.

---

Crisp Hardware, Confident Finish

A polished detail can quietly refine a space—these zinc-kissed lock nuts bring that crisp, engineered poise. I love the subtle gleam and tidy profile, a modern punctuation that feels both purposeful and refined. Style them with matte black fasteners for a chic contrast on exposed shelving or custom fixtures. Small, impeccable components are the secret to luxurious, lasting design.

---

Secure your projects with confidence—add this 100-pack of Hillman nylon lock nuts to your cart today.