1.
Flat countersunk square neck bolts
GB/T10-1988沉头方颈螺栓
2.
Cup head square neck bolts
GB/T12-1988半圆头方颈螺栓
3.
strong oval head square neck bolt
加强半圆头方颈螺栓
4.
Cup head square neck bolts with large head--Product grade C
GB/T14-1998大半圆头方颈螺栓C级
5.
Cup head square neck bolts with small head and short neck--Product grade B
GB/T801-1998小半圆头低方颈螺栓B级
6.
Strengthened cap head square neck bolts
GB/T794-1993加强半圆头方颈螺栓
7.
" Bolts,round head with oval neck"
GB/T8262-1987圆头椭圆颈螺栓
8.
Flat countersunk nib bolts
GB/T11-1988沉头带榫螺栓
9.
Flat countersunk double nib bolts
GB/T800-1988沉头双榫螺栓
10.
" 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
11.
" 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
12.
Square head bolts--Product grade C
GB/T8-1988方头螺栓C级
13.
Square head bolts with small head--Product grade B
GB/T35-1988小方头螺栓B级
14.
square collar-head set-bolt
方头凸缘端紧定螺栓
15.
" Bolts, small hexagon head with fit neck"
GB/T22-1976小六角头导颈螺栓
16.
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
17.
Side view of square head bolt with adjustable thread length.
螺纹长度可调整的方头螺栓侧面图。
18.
double-screw bolt
螺柱，双头螺纹螺栓