Spring Holder This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Milling Production of a milled Spring Holder. Approximately 3.05" x 2.75" x 1". Material is 4140, S7 Tool steel. Please see drawing for all specifications. Unless otherwise stated, the drawing takes precedence. Part Part Number: 1035-0018 Material: Alloy Steel Material Grade: 4140, S7 Tool Technical Specifications Category:Milling Dimensions77.47 x 69.85 x 25.4 inch Tolerance:0.127Annual Usage:30.0 The following suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) provide manufacturing services and are members of the MFG.com community. For more information visit http://www.mfg.com. MFG.com performs a 5-point inspection on all engineered parts and RFQs to ensure quality and enhance your quoting experience Milling: Milling, CNC milling, 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. A machine tool used to perform milling is called a milling machine or the CNC version is often referred to as a machining center. Milling can be performed manually or under CNC control called CNC milling. Milling and CNC milling are performed by machine shops.