Grade 8 Nylon Insert Lock Nuts

Grade 8 Nylon Insert Lock Nuts

Grade 8 Nylon Insert Lock Nuts

  • Nylon locking element will not gall or strip threads or remove plating
  • Full locking effectiveness from -65°F to 250°F
  • Provides a complete 360° locking circle to prevent loosening under vibration and impact
  • Locks at any position on the fastener for precise adjustment
  • Nylon collar seals threads and protects locked threads against corrosion
  • Zinc yellow plated finish
  • Identification:
    • Nylon Collar: Purple
    • Grade ID: Double notched corners or “6 dots”

Coarse Thread (USS)

Size No. Width Across Flats Thickness
1/4-20 34-8404 7/16 5/16
5/16-18 34-8405 1/2 11/32
3/8-16 34-8406 9/16 3/8
7/16-14 34-8407 5/8 29/64
1/2-13 34-8408 3/4 1/2
9/16-12 34-8409 7/8 9/16
5/8-11 34-8410 15/16 5/8
3/4-10 34-8412 1-1/16 11/16
7/8-9 34-8414 1-1/4 3/4
1-8 34-8416 1-7/16 1
1-1/8-7 34-8418 1-5/8 1-1/16
1-1/4-7 34-8420 1-13/16 1-1/4
1-1/2-6 34-8424 2-3/16 1-3/64

Fine Thread (SAE)

Size No.
1/4-28 34-8504
5/16-24 34-8505
3/8-24 34-8506
7/16-20 34-8507
1/2-20 34-8508
9/16-18 34-8509
5/8-18 34-8510
3/4-16 34-8512
7/8-14 34-8514
1-14 34-8516
1-1/8-12 34-8518
1-1/4-12 34-8520
1-1/2-12 34-8524
Shipping & Stocking Made Simple

At GNS Industrial Supply, we don’t just deliver products—we deliver peace of mind. Unlike traditional suppliers who ship and leave the rest to you, we take a hands-on approach to your inventory management. Our team visits your location, audits your existing stock, identifies what you need, and handles the reordering process for you. We then deliver directly to your facility and restock your supply room according to your preferred system—ensuring your operation runs smoothly without overstock or downtime. It’s a smarter, more personalized way to manage industrial supplies—built for teams who don’t have time to run out of what matters.