GB/T 833-1988
Slotted large cheese head screws
GB/T 6191-1986
6-Lobe cap screws，class 8.8
GB/T 949-1988
Slotted ralsed countersunk head screws with waisted shank
GB/T 839-1988
Knurled thumb screws with walsted shank-Type A
GB/T 839-1988
Knurled thumb screws with walsted shank-Type B
GB/T 835-1988
Knurled screws
GB/T 836-1988
Knurled screws with small head
GB/T 946-1988
Slotted raised cheese head with shoulder
GB/T 831-1988
Slotted shoulder screws
GB/T 16674.2-2016
Hexagon bolts with flange with metric fine pitch thread—Small series—Type U
GB/T 828-1988
Slotted pan head set screws with dog point(long:L>d)
GB/T 16674.2-2004
Hexagon bolts with flange with metric fine pitch thread—Small series—Type F
GB/T 16674.2-2004
Hexagon bolts with flange with metric fine pitch thread—Small series—Type U
GB/T 70.3-2008
Hexagon socket countersunk head screws
GB/T 70.2-2008
Hexagon socket button head screws
GB/T 70.2-2015
Hexagon socket button head screws
GB/T 70.1-2008
Hexagon socket head cap screws
GB/T 70.4-2015
Hexagon socket button head screws with collar
GB/T 70-1976
Hexagon socket head cap screws
GB/T 79-2007
Hexagon socket set screws with dog point
