1/2-13 All-Metal Top Lock Nuts (25 Pack) – Grade 8 High-Temperature, Vibration-Resistant Coarse Thread Locking Nuts for Critical Joints SAE J995 0.5"
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Product details
| Management number | 221617157 | Release Date | 2026/05/03 | List Price | $9.18 | Model Number | 221617157 | ||
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| Category | |||||||||
These 1/2-13 All-Metal Prevailing Torque Top Lock Nuts are engineered for professional and industrial use where vibration, heat, and load demand uncompromising performance. Manufactured from SAE Grade 8–class alloy steel, the top-lock design provides consistent locking force without nylon components. Ideal for automotive assemblies, heavy equipment, and structural joints where reliability is critical.
- SAE Grade 8 Performance: High-strength alloy steel designed for critical fastening applications. SAE J995. 25-pack.
- All-Metal Locking Design: No nylon insert—maintains locking force under heat and vibration. Crowned top that is crimped to create the locking feature with prevailing torque.
- High-Temperature Capable: Suitable for automotive, equipment, and industrial environments.
- Designed for Critical Joints: Preferred where loosening is not acceptable.
- Standard 1/2-13 Coarse Thread: Compatible with common Grade 8 coarse-thread bolts. Manufactured to IFI 100/107 specifications. SAE J995.
| Brand | Quantum Forge |
|---|---|
| Model | QFG36055-FBA |
| Set Name | All-Metal Top Lock Nut – 25 Pack |
| Size Name | 1/2-13 |
| Metal Type | Alloy Steel |
| Unit Count | 25.0 Count |
| Part Number | QFG36055-FBA |
| Thread Size | 1/2"-13 |
| Thread Type | Unified National Coarse (Unc) |
| Finish Types | Zinc-Plated |
| Grade Rating | industrial |
| Manufacturer | Quantum Forge |
| Thread Class | Class 2A |
| Thread Style | Right Hand |
| Fastener Type | Lock |
| Item Diameter | 0.5 Inches |
| Material Type | Alloy Steel |
| Exterior Finish | Zinc |
| Item Dimensions | 0.46 x 0.75 x 0.46 inches |
| Number Of Items | 25 |
| Thread Coverage | Fully Threaded |
| Number of Pieces | 25 |
| Screw Head Style | Hex |
| Maximum Shear Strength | 150,000 psi proof load strength |
| Compatible Groove Diameter | 0.5 Inches |
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