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High-strength screw is under more load than with ordinary screws to specifications.
Normal screw material Q235 (or A3) manufacturing.
High-strength screw 35# steel or other high quality materials, made of heat treatment improves strength.
Different material strength is the difference between the two.
From raw materials:
High strength bolts with high strength materials and manufacturing. Screw of high strength bolts, nuts and washers are made of high-strength steel, commonly used steel 45th boron steel, 40, 20, MN-TI-b steel. Common common Q235 steel screws.
From a strength perspective:
High strength bolts, use more widely. 8.8s and 10.9s two strength grades, grade 10.9, the majority of them. Ordinary screws lower strength, and General magnitude of 4.4, 4.8, 5.6-magnitude and magnitude 8.8.
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