Chenango Supply 5/8-11 Grade 8 Nylon Insert Lock Nuts, Alloy Steel Nylock Nuts, Yellow Zinc Chromate Finish, USS Coarse Thread Heavy Duty Fasteners, 10 Pieces (5/8-11 Nylock)

Grade 8 alloy steel 5/8-11 nylon insert lock nuts engineered for heavy machinery, automotive repair, agricultural equipment, and industrial fastening applications where vibration resistance and secure thread engagement are required. Specifications Material: Alloy steel, hardened Grade: Grade 8 Locking element: Nylon insert Thread: 5/8-11 USS coarse thread Finish: Yellow chromate zinc Quantity: 10 pieces Performance & Application Explanation These nylon insert lock nuts are manufactured from hardened alloy steel to Grade 8 specifications, delivering the strength rating required to match Grade 8 hex bolts in high-load assemblies. The integrated nylon insert deforms around bolt threads during installation, creating friction that resists loosening from vibration, shock, and dynamic loads. The 5/8-11 USS coarse thread form provides strong engagement with matching cap screws. Yellow chromate zinc coating offers corrosion protection while maintaining visibility for inspection. Nylon insert lock nuts eliminate the need for separate lock washers or thread-locking adhesives in most applications. B2B Use Cases Applicable for heavy equipment repair, automotive and truck maintenance, agricultural machinery, construction equipment, fabrication shops, engine assemblies, suspension components, and industrial fastening tasks where vibration loosening is a concern. Quality & Trust Reassurance Thread sizing and material hardness align with Grade 8 standards for accuracy and durability. Designed for mechanics, maintenance crews, and fabricators seeking reliable high-strength lock nuts to pair with Grade 8 bolts in demanding applications where joint integrity must be maintained under vibration.

• GRADE 8 ALLOY STEEL CONSTRUCTION – Hardened alloy steel delivers high-strength performance for heavy-duty applications, providing secure thread engagement when paired with Grade 8 hex head cap screws in critical vibration-prone joints.
• NYLON INSERT LOCKING MECHANISM – Integrated nylon insert grips bolt threads to resist loosening from vibration, thermal cycling, and dynamic loads, eliminating the need for additional lock washers or thread-locking compounds.
• 5/8-11 USS COARSE THREAD – Standard coarse thread matches 5/8-11 hex bolts for reliable engagement in heavy machinery, automotive, agricultural equipment, and structural applications requiring secure high-strength fastening.
• YELLOW CHROMATE ZINC COATING – Corrosion-resistant finish protects against moisture and environmental exposure, extending service life in outdoor, industrial, and equipment repair environments where rust compromises joint integrity.
• 10-PIECE PACK FOR MAINTENANCE AND REPAIR – Quantity supports equipment repair, fabrication projects, fleet maintenance, and MRO operations requiring high-strength lock nuts for demanding fastening tasks.