- GB/T 2672-1986 Hexagon Socket Head Screws
- GB/T 825-1988 Screw rings
- GB/T 823-2000 Cross recessed pan head screws
- GB/T 819.1-2000 Cross recessed countersunk head screws
- GB/T 818-2000 Cross recessed pan head screws
- GB/T 80-2000 Hexagon socket set screw
- GB/T 78-2000 Hexagon socket set screw
- GB/T 70.1-2000 Hexagon socket head cap screws
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