1. Features
Head design: cylindrical head, countersunk head, flat head, etc. Common ones include socket head cap screws and counterbore head.
Groove type: standard hexagonal groove, there are also anti-slip star (Torx) or hexagonal socket variants.
High torque transmission: hexagonal grooves can withstand large torque and are not easy to slip (compared to slotted or cross screws).
Aesthetics: the head can be completely sunk into the surface of the workpiece and remain flat.
2. Application scenarios
Mechanical equipment: high-precision equipment, molds, machine tools, etc.
Electronic products: mobile phones, computer internal structures (such as hard disk fixing).
Automobile/bicycle: engine parts, brake systems, bicycle accessories (such as disc brake screws).
Furniture assembly: concealed connection of high-end furniture.
Product classification:
Material Iron
Category 4.8 Grade 8.8 Grade 10.9
Material Stainless steel
Category 201 304 316
Size classification: National standard, British standard, American standard









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