SIZE: M:M5-M20;L:10-500 M:1/4-3/4,L:1-24Finished: zinc plated(cr3+,cr6+),black treatment, hot galvanization,nickel plated, chrome plated or stainless steel etc .Also produce non-standard pieces accord ...
HaiYan FeiHua Fasteners Co., Ltd.
Main Products: hex head lag screw/coach screw/din571, hanger boltsstuds... More