disc insert This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Coining Production of a disc insert. The buyer is looking for a metal disc in the size of 0.5" OD x .187" thickness. This is similiar to a washer but with out the hole in the center, just the complete disc. The grade of steel is not critical, just need it zinc plated. Part Part Number: d100 Material: Alloy Steel Material Grade: Technical Specifications Category:Coining Dimensions0.0 x 0.0 inch Annual Usage:200000.0 Get quotes online for manufacturing services at MFG.com from machine shops, fabricators, job shops and contract manufacturers. MFG.com connects buyers and suppliers when the buyer has a need and the supplier has the right expertise and capacity. MFG.com analyzes all engineered parts and RFQs for improved manufacturability and to ensure quality and a quick quoting experience. Coining: Coining is a stamping process in which the metal is compressed in a closed die. The punch compression forces the metal to conform to the shape of the top and bottom die. This process is commonly used to produce coins, medallions, tokens and labels.