[25 PKG] Hex Lock Nuts NU Nylon Inserts 18/8 Stainless 5/16-18

Hex Lock Nuts NU Nylon Inserts 18/8 Stainless 5/16-18 are engineered to deliver secure, vibration-resistant fastening in a compact hex form. Ideal for mechanical assemblies exposed to moisture and corrosive environments.

These lock nuts feature a molded nylon insert that locks onto the mating bolt, preventing loosening under vibration and thermal cycling. The 18/8 stainless steel construction provides strong corrosion resistance, making them suitable for outdoor, marine, and damp settings.

Key features

• Material: 18/8 stainless steel for dependable corrosion resistance and long service life.
• Locking mechanism: Built-in nylon insert provides reliable locking action to resist loosening.
• Size & thread: 5/16-18 UNC threads for standard hardware compatibility.
• Head style: Hex head for easy driving with common wrenches.
• Applications: Ideal for outdoor, marine, automotive, and machinery assemblies where vibration occurs.

Maintenance tip: Inspect the nylon insert for wear after repeated cycles; replace if locking performance diminishes. Store in a cool, dry environment to maximize nylon life.