Top Lock Nuts Grade 9 - HK USA - Eco Guard



Uniquely shaped threads provide a vibration resistant friction fit, so the nut stays put. These all metal locknuts withstand higher temperatures than nylon insert locknuts. Top thread section is deformed to create two or three locking zones; they start easily by hand, then must be wrenched into final position. Grade 9 is stronger than Grade C, Grade 8. ANSI B1.1 UNC or UNF Class 2B thread requirement. FNL Grade 9 Fasteners are coated with a EcoGuard(TM) Coating that meets 1000 hours of salt spray corrosion resistance.

  • Made in USA

Wrench Size:

  • 1/2-20 Nut - 3/4" Hex Head
  • 5/8-16 Nut - 15/16" Hex Head
  • 3/4-16 Nut - 1-1/6 Hex Head