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Đầu cắm ổ cắm phẳng bằng thép cacbon oxit đen Bu lông tiêu chuẩn DIN 7991
Class8.8, 12.9 Black Oxide Carbon Steel DIN 7991 Flat Head Countersunk Socket Bolt Item Flat Head Countersunk Socket Bolt Standard DIN7991 BOLT Material Carbon steel Stainless steel Alloy steel Aluminum as your requirements. Grade 4.8/6.8/8.8/10.9/12.9 Finish HDG/Dacromet/Sherardizing/Zinc plated...
