Inner Damper Spring This RFQ was sourced on www.MFG.com in USA for Coil Springs RFQ Coil spring, Cold Winding, Hot Setting, Shot Penning, Phosphated, closed and ground 340 deg. Buyer Information Industry Agriculture and Forestry City/Region Marshfield, Missouri Country USA RFQ RFQ Number 341515 Material Alloy Steel Material Grade Oil-Tempered, ASTM A229 Technical Specifications Category Coil Springs 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. Coil Springs: Springs are mechanical devices, commonly made from tensioned steel, used to exert pressure or tension, resist tension, or retract after tension is applied. Springs can be flat or coiled.