【机械工程】螺栓

安装螺栓孔不允许用气割扩孔,永乆性螺栓不得垫两个以上垫圈,螺栓外露丝扣长度不少于2～3扣.

hexagonal socket head cap screw

hexagon spline screw driver【机】

outside screw and yoke type

acme screw thread【机】;trapezoidal thread【机】

screw-type dosing machine (worm-type dosing machine)

screw conveyer

screw slotting cutter

fastening screw【机】;trip bolt【机】;