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Huaxia Fastener manufactures many types of hex bolts. Bolts are manufactured in grades 2, 5 and 8 from inches through 2 - 1/2 inches in diameter with no limitations on lengths. All bolts are manufactured to A.R.E.A. and A.S.T.M. specifications with either rolled threads of cut threads. Product Standard: GB/T 1228-1231-91, DIN 6914, DIN 6916, DIN 7990, DIN 7999, ASTM A325, A490, A325M, A490M.National standard: JIS: JIS B 1186, as well as carries on production according to the customer incoming samples and drawing.
Product specifications:
1) Diameter: M16 - M30, 7/16" - 1-1/2"
2) The length does not limit
3) Product grade: 8.8S, 10.S, grade 5, grade 8
4) Product surface: black, black phosphorization, chrome-faced
