Features: 1) Head type: pan, flat, round, truss, oval head 2) Drive style: slotted, Philips, slotted/Phil combined, Pozi 3) Material: steel, brass, stainless steel 4) Surface treatment: electric galvanized, black (black phosphated), copper-plated, nickel-plated Products: 1) Pan head machine screw 2) Flat head machine screw 3) Oval machine screw 4) Thumb screw Standards: 1) ANSI 2) DIN84/85/7985/963/964/965/966 3) BS Packing: boxes/cartons/pallets or according to customers requirements