1.
Square head bolts with small head--Product grade B
GB/T35-1988小方头螺栓B级
2.
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
3.
Square head bolts--Product grade C
GB/T8-1988方头螺栓C级
4.
Cup head square neck bolts
GB/T12-1988半圆头方颈螺栓
5.
Flat countersunk square neck bolts
GB/T10-1988沉头方颈螺栓
6.
strong oval head square neck bolt
加强半圆头方颈螺栓
7.
square collar-head set-bolt
方头凸缘端紧定螺栓
8.
" 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
9.
" Bolts, small hexagon head with hole through the shank"
GB/T23-1976小六角头螺杆带孔螺栓
10.
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。
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.
" Bolts, small hexagon head with holes through the head"
GB/T25-1976小六角头头部带孔螺栓
13.
double-screw bolt
螺柱，双头螺纹螺栓
14.
A small block of metal or wood with a central, threaded hole that is designed to fit around and secure a bolt or screw.
螺母，螺帽中部有螺纹用于与螺栓或螺钉相配合的小块金属或木头
15.
" Bolts, small hexagon head with fit neck"
GB/T22-1976小六角头导颈螺栓
16.
Cup head square neck bolts with large head--Product grade C
GB/T14-1998大半圆头方颈螺栓C级
17.
Strengthened cap head square neck bolts
GB/T794-1993加强半圆头方颈螺栓
18.
Top view of square head bolt. Selection box represents thread diameter.
方头螺栓的俯视图。选择框代表螺纹直径。