Specifications 1) din 975, class 4.8, class 8.8, ss 304 (a2), ansi 2) unc, 2a, grade 2, grade 5, astm a193 b7, b7m, b8, b16, l7, ss 304 (a2) 1) din 975, class 4.8, class 8.8, ss 304 (a2), ansi 2) unc, 2a, grade 2, grade 5, astm a193 b7, b7m, b8, b16, l7, ss 304 (a2) 3) size: m6 to m102 or 1/4" to 4" 4) length: 50mm to 1, 000mm or 2" to 40" (40 inch) 5) finish: black, zinc plated, hot dip galvanized, xylan 1424, xylan 1014, Different kinds of precision stud bolt, m42 stud bolts, stud bolt m12, types of stud bolts 1) material: different kinds of stainless steel, iron, copper or aluminum etc 2) main equipment: cnc lathe, automatic lathe, hand lathe grinder, thread rolling Machine, tapping drilling machine etc 3)advanced measuring & testing equipment: projecting apparatus, roughness tester, Hardness tester, concentricity tester etc 4) surface treatment: polishing, zinc plating, nickel plating or chrome plating, Phosphating, black anodization etc 5) parts are produced according to customers' drawing or sample. General exporting package or according to requires