MTR Rack Arm This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Milling This is the main part for a truck bed rack system, 2 parts are needed per rack. The material of choice is 6061-T6 aluminum and the parts are to be anodized black, so a clean finish is a must. The tolerances needed are +/- 0.010. Buyer needs a quote on 200-1000 pieces Approximately 17.54 inch x 6.75 inch x 0.750 inch. Please see drawing for all specifications. Part Part Number: 1452477474687 Material: Aluminium Material Grade: 6061-T6 Technical Specifications Category:Milling Dimensions17.54 x 6.75 x 0.75 inch Tolerance:0.01Annual Usage:200.0 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.