1.
bolt or cotter-pin drill
螺栓或开尾销孔钻头
2.
To drive(a screw or bolt)into a countersink.
将钻或螺栓置入埋头孔
3.
suction valve bolt and split pin
吸入阀螺栓及开尾销
4.
Bolts with drilled or undersize heads shall not be used.
被钻孔或头部尺寸太小的螺栓不能使用。
5.
A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.
埋头孔顶部扩大的孔，为使钻或螺栓的头与地面相平或在地面以下
6.
insert(a screw or bolt)into such an enlarged hole
将（螺钉或螺栓）旋入埋头孔中.
7.
An awl with a beveled tip, used to make holes in wood for brads or screws.
锥钻，打眼钉钻头倾斜的钻子，用于在木头上钻孔以钉角钉或螺钉
8.
A tool for boring holes in wood or ice.
螺旋钻，木螺钻一种用于在木头或冰上钻孔的工具
9.
a round-headed bolt for timber; threaded along part of the shank; inserted into holes already drilled.
加工木料用的圆头螺栓；部分连杆有螺纹；可以插入事先钻出的孔中。
10.
counterbore for hexagon socket head bolt
内六角头螺栓埋头孔
11.
" 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
12.
" Bolts, small hexagon head with hole through the shank"
GB/T23-1976小六角头螺杆带孔螺栓
13.
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
14.
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
15.
tap(ping) drill
螺丝孔钻，螺丝底孔钻
16.
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
17.
" 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
18.
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