Drywall screw 

  Buge head fine thread / coarse thread                 
  (1)Material: carbon steel 1022  hardened

  (2)Size:all size,M3.5X13-M4.8X200 / 6#x5/8~ 14#X3''

  (3)Surface :Black/grey phosphate or white zinc plated

  (4)Point: drill point or sharp point

  (5)Thread: fine thread for metal, coarse thread for wood 
  (4)Packing:bulk packing,or 1000 & 500 in box -carton-pallet.

 E-mail:yjs1233＠126.com;      David.Bai＠YunYao-china.com;

QQ:2647779470; Wechat:0086-13512159475 ;WhatsApp:0086-135121594754 ;Skype:bdj20092009