PISTON ROD This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Polishing Part is complete but needs rework to attain finish shown in note 3. Current process is 1) grind off existing flash chrome to d.4980 2)chrome plate to d.501 3)grind/polish down to d.4996/.4990 with finish shown below. Supplier must be familiar with finish callout and be able to analyze and provide certification of finish. We can provide the can already ground and re-plated, but would prefer supplier took care of everything. Finish: Ra = 4 to 8 microinch Rtm = Rz[DIN] = 40 microinch MAX Rp = 24 microinch MAX tp (bearing ratio) = 50% to 70% at .25 Rtm, relative to a reference line c = 5% tp Part Part Number: 150K14YE-6-1-1 Material: Alloy Steel Material Grade: SST 416 WITH CHROME PLATE Technical Specifications Category:Polishing Dimensions0.0 x 0.0 inch Annual Usage:0.0 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 Polishing: Polishing and buffing processes are surface treatments performed to smooth a variety of materials. Polishing may be done for functional purposes on parts like shafts, cylinders or lenses. Polishing is also done for aesthetic purposes, for example, to achieve hi-gloss, satin or brushed finishes on materials. Polishing and buffing require the use of a buffing pad and a compound, usually containing a very fine, silica-based abrasive. Polishing is done manually, with power tools, or with fixed machines.