Bolt, Machine Hex Head, AMS 5708, .3125-24 UNJF-3A This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Hex Bolts Buyer is in search of a machine hex head bolt. Please quote on AS3308-18 hex head bolt. Part Part Number: AS3308-18 Material: Material Grade: Technical Specifications Category:Hex Bolts Dimensions0.0 x 0.0 inch Annual Usage:5000.0 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 Hex Bolts: Hex bolts are bolts with a hexagonal head that are generally driven in with a wrench.