4.5 Blank This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Turning Production of a blank. Blank is approximately 6" OD x 10.75" long. Please quote mat & machining together. 4140 HT 32-36 Rockwell material. 2-7/8 API - reg PIN with a 1" hole 6" deep. Finished dimension on blank is 5-1/2" so stated 6" diameter is not crutial. Buyer need a new supplier for these blanks. Please contact buyer with any questions. Part Part Number: 4.5 blank Material: Alloy Steel Material Grade: Technical Specifications Category:Turning Dimensions0.0 x 0.0 inch Annual Usage:100.0 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. Turning: 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. Turning can be either on the outside of the cylinder or can perform inside the diameter, turning (also known as boring) to produce tubular like components to various geometries. A machine tool that performs turning is called a lathe.