Our products range:bolts, nuts, wood screws, machine screws, self-tapping screws, spring washers, flat washers, anchors etc. according to DIN, ANSI, BS and JIS standard. Made from carbon steel at Grado 4.8, 6.8, 8.8, 10.9, 12.9 with ACABADO of plain, black, zinc(bright/yellow), brass, nickel, chrome, etc.
hex bolt, self-drilling screw
Gem-Year are producing all kinds of high quality products such as bolts, nuts, screws, drawn wire and other off-standard fasteners, which are according to GB, ANSI, DIN, UNI,JIS and ISO standards with yearly production output of 200,000 metric tons.
Hex head bolts and screws, High strength bolts for Structural application, Full thread stud bolts, Double-end stud bolts , Socket head cap/set screws, Welded stud, Anchor bolts, U bolts sets, Clamp sets, Insulation clamp sets.
Hex nuts, Heavy hex nuts, High strength nuts
for Structural application, lock nuts
Plain washer, spring washer, square taper
API 20E BSL1、BSL2、BSL3 Bolts and Nuts
Our product range includes stainless steel hex head cap screws, hex socket head cap screws, anchor bolts, threaded rods, wire rods, self tapping screws, thread forming screws, expansion bolts, square neck bolts threaded rods, punch products, etc. Product specifications comply with international standards, including GB, JIS, DIN, ANSI and ASME