5/16" Stainless Steel Nylon Lock Nuts (50-Pack)

These Hillman SAE nylon lock nuts feature a durable 18-8 stainless steel construction with a compressible nylon insert to resist vibration and prevent loosening. Ideal for outdoor and marine applications, they deliver best-in-class corrosion resistance and secure fastening for 5/16-18 coarse threads.

Key Features:

• Corrosion Resistant: 18-8 stainless steel for long-lasting performance in harsh environments
• Secure Hold: Nylon insert locks threads to prevent loosening from vibration—no lock washer needed
• SAE Coarse Thread: 5/16-18 thread size fits common hardware and fasteners
• Bulk Convenience: 50-pack for projects, maintenance, and inventory needs
• Clean Finish: Stainless steel appearance complements professional installations

Specifications Table:

Frequently Asked Questions (FAQ):

Q: What thread size do these lock nuts fit?
A: They are 5/16-18 SAE coarse thread.

Q: Are these suitable for outdoor or marine use?
A: Yes. The 18-8 stainless steel provides excellent corrosion resistance for outdoor and damp environments.

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

Q: What tools are required for installation?
A: Use a standard wrench or socket sized for 5/16" nuts; tighten until the nylon insert engages the threads.

Q: How many nuts are included?
A: A total of 50 lock nuts are included in the pack.

Sleek, Stainless Precision for Timeless Hardware Details

These stainless nylon lock nuts bring polished restraint to functional detailing, marrying industrial strength with refined simplicity. The satin steel and crisp nylon ring feel modern and purposeful, creating a cohesive look across fixtures and furnishings. Use them to elevate exposed hardware on shelving, benches, or outdoor pieces where the finish matters. A small yet essential touch that anchors luxury with reliability.

Secure your projects with corrosion-resistant confidence—add this 50-pack of Hillman stainless nylon lock nuts to your cart today.