socket head cap screw allen key finished product guaranteed load test
The socket head cap screw allen key finished product guarantee load test consists of 2 steps: 1. Implement the specified guaranteed load. see picture 1 2. Measure the permanent elongation produced by the guaranteed load Figure 1 Example of installation of guaranteed load on fastener finished product Suitable for fasteners that meet the following requirements: 1. Bolts and screws with better head bearing capacity than threaded rods 2. The head bearing capacity is stronger than the screw and bolt of the threadless rod 3. No threaded rod diameter d s >d 2 or d s ≈d 2 4. The nominal length of screws and bolts l≥ 2.5d 5. Thread length b ≥ 2.0d 6. The total length of the stud is l t ≥3.0d 7.3mm≤d≤39mm 8. All performance levels socket head cap screw allen key guarantee load test procedure: socket head cap screw allen key are fasteners that have passed the inspection of size. Each end of the tested screw should be properly machined as shown in Figure ...