[100 PKG] Heavy Hex Lock Nuts NU Nylon Inserts Steel Zinc 5/8-11

Heavy Hex Lock Nuts NU Nylon Inserts Steel Zinc 5/8-11 are engineered for secure, vibration-resistant fastening in demanding industrial and automotive applications. These nylon insert lock nuts (nylock) combine a robust steel body with a durable zinc finish and a nylon locking element to prevent loosening under vibration or dynamic loads.

• Nylon Insert Lock Nut (NU): nylon insert locks the nut in place, reducing backing off in high-vibration environments.
• Heavy Hex Design: provides increased wrenching surface for easy installation and removal.
• Material & Finish: steel with a durable zinc finish for enhanced corrosion resistance.
• Thread Size: 5/8-11 UNC (coarse thread) to fit standard bolts.
• Applications: ideal for machinery, automotive, agricultural, and industrial equipment where secure fastenings are critical.

Specifications

• Size: 5/8-11
• Type: Heavy Hex Lock Nut
• Material: Steel
• Finish: Zinc Plated
• Nylon Insert: Yes (NU nylon insert)