QUALITY

• Dimensional Inspection: Verify that the fasteners meet the specified dimensions, including length, diameter, thread pitch, and head dimensions. Precision measuring tools like micrometers, calipers, and thread gauges are used for this purpose.
• Material Testing: Ensure that the materials used for fasteners meet the required mechanical and chemical properties. Common material tests include tensile testing, hardness testing (e.g., Rockwell or Brinell hardness), and chemical composition analysis.
• Thread Inspection: Check the quality and accuracy of threads on fasteners using thread plug gauges, thread ring gauges, or optical comparators. Thread fit, pitch, and form are evaluated.
• Surface Finish Inspection: Examine the surface finish of fasteners to ensure they meet specified requirements.
• Coating and Plating Thickness Testing: If the fasteners are coated or plated, we measure the thickness of the coating to ensure it meets the required standards. We use methods like X-ray fluorescence (XRF) or eddy current testing.
• Corrosion Resistance Testing: We assess the fasteners' resistance to corrosion through salt spray tests. This is especially important for fasteners used in harsh environments.
• Torque-Tension Testing: Determine the relationship between the torque applied to a fastener and the resulting tension or clamping force. This helps ensure proper fastening and preload in applications.
• Vibration and Fatigue Testing: Subject fasteners to dynamic or cyclic loading conditions to assess their resistance to vibration-induced loosening and fatigue failure. This is crucial for fasteners in automotive and aerospace applications.
• Heat Treatment Verification: Confirm that heat-treated fasteners have undergone the correct heat treatment processes and have achieved the desired material properties.
• Microstructural Analysis: Examine the microstructure of fastener materials using metallography and microscopy to check for any defects or anomalies.
• Torsion Testing: Assess the fasteners' resistance to torsional forces by subjecting them to controlled twisting tests. This is particularly important for fasteners like bolts and screws.
• Impact Testing: Evaluate fasteners' resistance to impact forces, which is important in applications where fasteners may be subjected to sudden loads.
• Environmental Testing: Simulate environmental conditions such as temperature extremes, humidity, and exposure to chemicals to assess how fasteners perform in different settings.
• Non-destructive Testing (NDT): Utilize NDT methods like ultrasonic testing, magnetic particle inspection, or dye penetrant inspection to detect internal defects or cracks without damaging the fasteners.
• Quality Documentation: Maintain detailed records of test results, certificates of compliance, and traceability data for each batch of fasteners produced.

We have well-equipped testing and quality control lab that ensures that fasteners meet industry standards, customer requirements, and safety regulations. It helps identify defects early in the manufacturing process, ensuring that only high-quality fasteners reach the market. Additionally, it allows us to continuously improve our processes and materials based on testing data and feedback.