螺丝（Bolt / Screw）一、外六角螺栓/螺丝（Hex Head Cap Bolt / Screw---HCS）二、内六角螺丝（Socket Head Cap Screw---SHCS）1.圆柱头内六角螺丝（Socket Head Cap Screw---SHCS）2.半圆头内六角螺丝（Button Head Socket Cap Screw---BH SHCS）3.平头/沉头内六角螺丝（Flat Head Socket Cap Screw---FH SHCS）4.低头内六角螺丝（Low Head Socket Cap Screw---LH SHCS）三、内六角紧定螺钉（Socket Set Screw---SSS）1.内六角平端紧定螺钉（Socket Set Screw with Die / Flat Point---SSS FT）2.内六角球面紧定螺钉（Socket Set Screw with Round Point---SSS RD）3.内六角锥端紧定螺钉（Socket Set Screw with Cone Point---SSS CN）4.内六角凹端紧定螺钉（Socket Set Screw with Cup Point---SSS CP）5.内六角滚花凹端紧定螺钉（Socket Set Screw with Knurled Cup Point---SSS KNL)6.内六角长圆柱端紧定螺钉（Socket Set Screw with Full Dog Point---SSS DOG）7.内六角短圆柱端紧定螺钉（Socket Set Screw with Half Dog Point---SSS½DOG）四、内六角圆柱头轴肩螺钉（Socket Shoulder Screw）五、方头螺栓（Square Head Bolts---SQHD）六、马车螺栓（Carriage Bolt---CB）七、吊环螺栓（Eye Bolt）八、U型螺栓（U Bolt）九、牙条（Stud---14”以下/ Threaded Rod）十、机螺丝（Machine Screw-
