Chenango Supply 5/16-18 Grade 8 Nylon Insert Lock Nuts
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- 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.
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Estimated shipping
Select a product to estimate shipping.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 industrial maintenance tasks where high-strength locking fasteners are required.
Quality & Trust Reassurance
Manufactured for consistent threading, hardened strength, and reliable locking performance. Designed to meet the expectations of professional mechanics, fabricators, and maintenance teams working in high-load fastening environments.
| Main Specification | |
|---|---|
| Manufacturer | Chenango Supply |
| Unit Count | 50 Count |
| Exterior Finish | Zinc |
| Metal Type | Alloy Steel |
| Thread Coverage | Fully Threaded |
| Outside Diameter | 0.31 inches |
| Brand | Chenango Supply |
| Number of Items | 50 |
| Fastener Type | Hex |
| Item Diameter | 0.31 Inches |
| Number of Pieces | 50 |
| Thread Size | 5/16"-18 |
| Material | Metal |
| Colour | Gold |
| Thread Type | Unified National Coarse |
| Product information | |
| Set Name | 5/16-18 Grade 8 Nylon Insert Lock Nut Set (50 Piece) |
| Technical Details | |
| Part Number | 12-05CN8P |
| Model | 12-05CN8P |
| Inside Thread Size | 5/16 |
| Material Type | Metal |
| Thread Style | Unified Coarse |
| Thread Class | Coarse |
| Compatible groove diameter | 0.31 Inches |
| Style | |
| Finish Types | Steel |
| Others | |
| Item Highlight | Alloy Steel or Yellow Chromate Zinc or High-Strength Nylock Hex Nuts (50 Pieces) |
| Product Type | Hex Bolts |
| Grade Rating | grade_ 8 |
| Size Name | 5/16-18 NYLOCK |
| Screw Head Style | Hex |
| Drive Style | External Hex |