Chenango Supply 5/16-18 Grade 8 Nylon Insert Lock Nuts

Key features

• GRADE 8 ALLOY STEEL CONSTRUCTION – Manufactured from quenched and tempered alloy steel to deliver hardened strength for demanding mechanical, automotive, and industrial fastening applications.
• ENGINEERED HIGH-STRENGTH PERFORMANCE – Rated with a minimum tensile strength of 150,000 PSI to support secure fastening where high load capacity and durability are required.
• STANDARD 5/16-18 USS COARSE THREAD – Designed with 5/16-18 USS coarse threads for reliable engagement with matching bolts and machine screws used in heavy-duty assemblies.
• NYLON INSERT LOCKING DESIGN – Integrated nylon insert grips the fastener threads to help prevent loosening caused by vibration, movement, or dynamic loads.
• YELLOW CHROMATE ZINC COATING WITH BULK PACK – Yellow chromate zinc finish provides corrosion resistance and quick Grade 8 identification; 50-piece pack supports shop inventory, maintenance, and repair needs.

High-strength Grade 8 nylon insert lock nuts engineered for fastening applications where vibration resistance, hardened performance, and dependable load retention are required. Specifications Nut type: Nylon insert lock nut (Nylock) Thread size: 5/16-18 Thread type: USS coarse thread Grade: Grade 8 Material: Quenched and tempered alloy steel Minimum tensile strength: 150,000 PSI Finish: Yellow chromate zinc coating Quantity: 50 pieces Performance & Application Explanation These 5/16-18 Grade 8 Nylock hex nuts are designed to maintain clamp load by using a nylon insert that grips the bolt threads and resists loosening under vibration. This locking action makes them well suited for high-stress environments where standard hex nuts may back off during operation. The quenched and tempered alloy steel construction delivers the strength required for heavy machinery and automotive applications. The yellow chromate zinc coating provides corrosion resistance while allowing fast visual identification of hardened Grade 8 hardware during installation and inspection. B2B Use Cases Commonly used in heavy machinery assembly, automotive repair, equipment fabrication, agricultural equipment, and ind

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