Lead Screw This RFQ was sourced on www.MFG.com in USA for Machining Material: 4140 Alloy Steel. Black oxide finish. Precision Acme Lead Screw Stock. Use MCmaster-carr part number 98940A619 Buyer Information Industry City/Region , Virginia Country USA RFQ RFQ Number 309763 Material Technical Specifications Category Machining Dimensions The following suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) provide manufacturing services for the machine tool industry, automotive industry… For more information visit www.MFG.com. MFG.com analyzes all engineered parts and RFQs for improved manufacturability and to ensure quality and a quick quoting experience. Machining: Milling and Turning, or CNC milling and turning will fall in this process, or manual milling is the process used to produce prismatic components. A rotating cylindrical cutter with multiple flutes, commonly called an endmill, traverses along multiple axes to machine features such as slots, pockets and profiles. Turning, CNC turning, or manual turning is the process used to produce cylindrical components. A cylindrical piece of stock is rotated and a cutting tool is traversed along 2 axes of motion to produce precise diameters and depths.