HHCS Bolts This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Hex Bolts Buyer is looking for a manufacturer for special length HHCS bolt. Diameter: 1/4" Length: 22 5/8" Thread Size: 20 Grade: 2 Part Part Number: 22 5/8 Material: Material Grade: Technical Specifications Category:Hex Bolts Dimensions0.0 x 0.0 inch Annual Usage:85000.0 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.