GB/T 2673-2007
6-Lobe 90° flat head screws
GB/T 2672-2004
6-Lobe pan head screws
GB/T 6190-1986
6-Lobe cap screws,class 4.8
GB/T 2671.2-2004
6-Lobe cap screws
GB/T 2671.2-2004
6-Lobe knurled cap screws
GB/T 2671.1-2004
6-Lobe low cap screws
GB 945-1976
Cross recessed fillister haed screws
GB/T 84-1988
Square set screws with cup point
GB/T 86-1988
Square set screws with short dog point and cone end
GB/T 821-1988
Square set screws with chamfered end
GB/T 85-1988
Square set screws with long dog point
GB/T 83-1988
Square set screws with long dog point and rounded end
GB/T 74-1985
Slotted set screws with cup point
GB/T 75-1985
Slotted set screws with dog point
GB/T 71-1985
Slotted set screws with cone point
GB/T 72-1988
Slotted set screws with cone point
GB/T 823-1988
Small pan head screws with cross recess
GB/T 70-1985
Hexagon socket plain heads cap screws
GB/T 70-1985
Hexagon socket knurled heads cap screws
GB/T 832-1988
Slotted cap stan screws-Type A