1.
Hexagon bolts with split pin hole on shank--Reduced shank--Product grade B
GB/T31.2-1988六角头螺杆带孔螺栓细杆B级
2.
" Bolts, small hexagon head with hole through the shank"
GB/T23-1976小六角头螺杆带孔螺栓
3.
Hexagon bolts with split pin hole on shank--Product grade A and B
GB/T31.1-1988六角头螺杆带孔螺栓A和B级
4.
Hexagon bolts with split pin hole on shank--Fine pitch thread--Product grade A and B
GB/T31.3-1988六角头螺杆带孔螺栓细牙A和B级
5.
" Bolts, small hexagon head with fit neck and hole through the shank"
GB/T24-1976小六角头螺杆带孔导颈螺栓
6.
Hexagon bolts with wire holes on head--Reduced shank--Product grade B
GB/T32.2-1988六角头头部带孔螺栓细杆B级
7.
Hexagon fit bolts with Split pin hole on shank--Product grade A and B
Gb/T28-1988六角头螺杆带孔铰制孔用螺栓A和bb>级b>
8.
counterbore for hexagon socket head bolt
内六角头螺栓埋头孔
9.
" Bolts, small hexagon head with fit neck and holes through the head"
GB/T26-1976小六角头头部带孔导颈螺栓
10.
Hexagon bolts with wire holes on head--Product grade A and B
GB/T32.1-1988六角头头部带孔螺栓A和B级
11.
" Bolts, small hexagon head with holes through the head"
GB/T25-1976小六角头头部带孔螺栓
12.
Hexagon bolts with wire holes on head--Fine pitch thread--Product grade A and B
GB/T32.3-1988六角头头部带孔螺栓细牙A和B级
13.
Fasteners--Counterbores for hexagon bolts and nuts
GB/T152.4-1988紧固件六角头螺栓和六角螺母用沉孔
14.
Hexagon head bolts-Reduced shank-Product grade B
GB/T5784-1986六角头螺栓--细杆B级
15.
Hexagon fit bolts--Product grade A and B
Gb/T27-1988六角头铰制孔用螺栓A和bb>级b>
16.
Hexagon bolts with slot on head--Product grade A and B
GB/T29.1-1988六角头头部带槽螺栓A和B级
17.
Hexagon head bolts-Product grade C
GB/T5780-1986六角头螺栓--C级
18.
Hexagon head bolts-Full thread-Product grade C
GB/T5781-1986六角头螺栓--全螺纹--C级