Hex bolt, Hexagon Head Bolt, Fastener ANSI B18.2.1, BSW 1/4"--1-1/2" Carbon Steel,Alloy Steel Hex bolts, Hexagon Head Bolts, ... Hex Bolts ,Hexagon Bolts,Hex Head BoltsMetric Standard:ANSI B18.2.1, BSWWe also could produce un-standard products according to ... Steel: C1030/1035/1040/10453. Alloy Steel: 40CRSize:1/4"--1-1/2"Length:1/2"- 9"Finishing: 1. Plain2.White Zinc Plated : CR3+ , CR+63 ...