Thruster Housing This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Other Machining Please quote to finish bore and cut 4 keyways on the ID of this forging. The part will be shipped to you with a 5" rough bore and the feet will be welded in place. The required bore is 5.250" straight through the entire part. Suppliers are urged to contact the buyer for any clarification needed when preparing quotes. Required finnish on bore and keyways is 32 micron. Part Part Number: 421 Material: Alloy Steel Material Grade: ASTM A668 Cass D Forging Technical Specifications Category:Other Machining Dimensions0.0 x 0.0 inch Annual Usage:1.0 Are you looking for suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) to provide manufacturing services for machine tool industry, automotive industry? For more information visit MFG.com. MFG.com performs a 5-point inspection on all engineered parts and RFQs to ensure quality and enhance your online quoting experience Other Machining: Machining other is generally used when machining sub-process is unknown. This is also used for items machined on dedicated equipment.