Product details Place of origin: tianjin, china (mainland) brand name: huhao model number: common sizes standard: din material: c1022a carbon steel head type: bugle philips head thread type: fine/coarse thread point type: sharp point finish: phosphated/ galvanized color: white/black/gray/yellow/blue harden: high harden treatment: heat treatment hot sizes: 3.5*19/25/32/38mm oem: available Usages: For metal /wood profile, do much less damage to wood and are easier to be removed and even be reused.More and more widely used in home decoration. Also as fasteners, more and more widely used in hard wood, drop ceiling, furniture-making, gypsum board/plaster board decoration, sheet iron-machining, light steel joist and construction . Packaging details: 5000~1000 pcs/box, 16~20 box/carton, samll color/white box , big color/brown carton.