(10) 5/16-18" Coarse Thread Grade 8 Nylon Insert Hex Lock Bolt Nut

Grade 8 Nylon Insert Hex Lock Nuts, 5/16-18 Coarse Thread, 10 Pack

This 10-piece set contains Grade 8 nylon insert hex lock nuts with 5/16-18 coarse thread. The nylon insert design creates friction against the mating bolt threads to resist loosening from vibration, making these lock nuts a common choice for automotive, machinery, and equipment fastening where a standard nut could back off. Grade 8 indicates a high-strength steel grade rated for demanding load applications.

Product Details

• Quantity: 10
• Thread Size: 5/16-18
• Thread Type: Coarse
• Grade: Grade 8
• Style: Nylon Insert Hex Lock Nut

Frequently Asked Questions

Q: What does 5/16-18 mean? A: The 5/16 refers to the nominal thread diameter, and the 18 indicates 18 threads per inch, which is the coarse thread series for this size.

Q: What is a nylon insert lock nut used for? A: The nylon insert grips the bolt threads to add resistance to loosening, which is useful in applications exposed to vibration or movement.

Confirm the complete device or equipment model before purchase.