DIN603 bulk carriage bolts M8 wholesale stainless steel round head square neck screw screws stainless steel carriage bolts carriage bolts screws generally used for marble stem pendant installation, tighten when the bolt shank as well - neck role does not rotate, easy positioning and installation, major used in some places require head screws. Foshan 9 Teng specializing in the production of stainless steel DIN603 / bulk carriage bolts / GB / 12 head carriage bolts complete specifications large favorably customized non-standard (material: 304) of the same name, also known as stainless steel coach screws square neck bolts, its standards GB12, GB14 , GB801 and DIN603. Their specific area is less than half the round into GB12, GB14 and the domed head DIN603, GB801 low square neck. According to the actual use to select a different type. Fax: 0757-85513925 Mobile: 13923122812 Miss Deng (Sales Director) Mobile: 18988647827 Miss Deng (Customer Service) phone: 18988647817 Miss Ding (Sales Director) Mobile: 18603096090 Yan Sheng (sales technique) QQ: 1575350541 Mr Yan (Sales Manager) QQ: 1850508409 Miss Deng (sales charge) QQ: 844594073 Miss Ding (sales charge) QQ: 1657978950 Pang Sheng (Sales Support) Phone: 0757-85513915 0757-85530997