螺栓是一个带头部并在部分长度上有螺纹的圆柱体。
A bolt consists of a head and a cylindrical body with screw threads along a portion of its length.
听听圆柱头内六角螺栓内六角扳手大小有时提到wiMwi跟随由大小在工具或插口of，即wiM6wi ，固然这可能与切实的准则用途混杂；
Hexagon wrench size is sometimes referred to "M" followed by the size of the tool or socket that is "M6" even though this may be mistaken with the precise criteria for use;
螺栓选用优质合金钢，螺母、垫圈选用优质碳结钢，圆柱头焊钉选用ML 15al。
The bolts are made from excellent quality alloy steel, the nuts and washers are made from carbon steel, cheese head studs for stud welding are made from ML15AL.
螺栓选用优质合金钢，螺母、垫圈选用优质碳结钢，圆柱头焊钉选用ML 15al。
The bolts are made from excellent quality alloy steel, the nuts and washers are made from carbon steel, cheese head studs for stud welding are made from ML15AL.
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