Division I professional production of hex bolts United States, (tel :0512 -57735650, Fax :0512 -57735695, Contact: Sung Yong) GRADE American Standard 5, Surface treatment: blue white zinc plated (performance standards: HEX CAP SCREWS ANSI B18 .2.1). 
 Specifications: 
 Diameter: 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13, 9/16-12, 5/8-11, 3/4-10 
 Length: 3 / 8 1 / 2 5 / 8 3 / 4 7 / 8 1 "1-1/4 1-1/2 1-3/4 2" 2-1/4 2-1/2 2-3 / 43 "3-1/4 4 3-1/2 3-3/4" 4-1/2 5 " 
 Specifications listed above have prepared our entire inventory!