【机】 螺钉槽铣刀, 起槽铣刀, 金属开缝铣刀

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 flange

fastening screw【机】;trip bolt【机】;