种菜的阿布
说法比较多，仅供参考：一、有无螺母（本人及多数人观点）螺钉一般是直接上在某件工件上，螺栓一般和螺母配合，做连接与紧固。二、受力方式（某资料定义）1、工具在圆周旋动的是螺栓，2、工具在圆心旋动的是螺钉，3、不能使用工具旋动的是螺柱。三、look（英文的定义）螺栓(bolt)定义是：headed fasteners having external threads that meet an exacting, uniform bolt thread specification (such as M, MJ, UN, UNR, and UNJ) such that they can accept a nontapered nut（螺母）.螺钉（screw)的定义是:Screws are defined as headed, externally-threaded fasteners that do not meet the above definition of bolts.
喵呜兔几
钢结构螺栓 BOLT FOR STEEL STRUCTURE 扭剪螺栓 TORQUE BOLT 双头螺栓 STUD BOLT 组合螺钉 ASSEMBLED BOLT 电子螺丝 ELECTRONIC SCREW 紧定螺丝 TIGHTENING SCREW 塞打螺丝 STUFF SCREW 自攻钉 SELF-TAPPING SCREW 自锁螺钉 SELF-LOCKING BOLT 焊钉 WELDED PIN 墙板钉WALLBOARD NAIL 拉铆钉RIVET 全牙丝杆 FULL-THREAD ROD 化学膨胀螺栓 CHEMICAL EXPANSION BOLT 铆螺母 RIVET NUT 金属自锁螺母 METAL SELF-LOCK NUT 法兰螺母FLANGE NUT 槽螺母 SLOTTED NUT 盖形螺母 CAP NUT 平垫 PLAIN（FLAT） WASHER 弹簧垫圈SPRING WASHER 1、白锌 WHITE ZINC 2、灰磷 GREY PHOSPHORUS 3、黑磷 BLACK PHOSPHORUS 4、镀铬CHROMEPLATE 5、电泳黑ELECTROPHORESIS BLACK 6、机械镀锌MECHANICAL ZINKING 7、热浸镀锌HOT DIP GALVANIZING
优质英语培训问答知识库
