Shoulder Throttle Lever Bolt Steel Screw Machined Parts Specifications Name: shoulder throttle lever bolt. Material: 304 stainless steel. Dimension: Ø20x56mm M6x1.0. Finish: plain. Screw Machined Parts Display Screw machining and screw machine products with metal materials are all acceptable finished. The primary hardware materials of screw machined parts can be finished including copper, iron, aluminum and stainless steel. As a Custom Screw Machined Parts manufacturer, we specialize in processing long screw with hexagon sockets, precise and slender axle accessories. The best quality and high precision screw machining parts can be provided you the most competition price.