We adhere to strict quality control standards to ensure every fastener meets the highest industry requirements and customer expectations
Strict testing of all incoming materials (steel, stainless steel, alloy) for chemical composition, hardness, and mechanical properties before production.
Continuous monitoring during production with regular sampling checks for dimensions, thread accuracy, and surface finish at every production stage.
100% visual inspection and random sampling for mechanical testing (tensile strength, torque, corrosion resistance) before packaging.
Final verification of packaging, labeling, quantity, and quality certification documents to ensure compliance with customer requirements.
| Standard Type | Compliance | Testing Method | Accuracy Level |
|---|---|---|---|
| Dimensional Accuracy | ISO 898-1, DIN 934, ANSI B18.2.1 | CNC Measuring Machine | ±0.001mm |
| Mechanical Properties | ASTM A325, ISO 6892 | Universal Testing Machine | Class 1 |
| Thread Quality | ISO 898-2, UNF/UNC | Thread Gauge & Profilometer | 6g/6H |
| Corrosion Resistance | ASTM B117, ISO 9227 | Salt Spray Test Chamber | 5000+ Hours |
| Material Composition | RoHS, REACH | Spectrometer Analysis | 0.001% |
All our products are 100% traceable with complete quality records available for audit upon request
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Shenzhen Toprecision Technology Co., Ltd.
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