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Galvanized Countersunk Self Drilling Screw

Material: C1022A ,carbon steel 22A 
Head : countersunk head  ,CSK head ,flat head 
Thread : Fine thread & Twin thread & Coarse thread ,full thread & half thread 
Drive: Philips drive (PH recess)
Point : Drill sharp point
Finish: Galvanized : white & yellow &white blue 
Phosphate : black & Gray & Galvanized 
Surface treatment : Bright and sharp thread ,tempered ,hardened  
Standard : DIN 7504K
Diameter: 3.9mm -4.2mm (#7 - #8)
Lengh: 19-50mm(3/4"-2")
Package: 1000pcs/box,16-20box/carton,25-50kg/bag in bulk,or as your require
Used : More and more used in light steel keel ,window and door ,steel sheet ,shaped steel ,sheet ,decoration , construction ,etc 
Place of origin : Tianjin City ,China 
Port of shipment :Xingang ,Tianjin port 
Ability : 300 ton per month 
MOQ:3 ton,trial order can be discussed
Payment term:T/T
Brand : YINUO
Delivery time: after receive the deposit ,within 35 days .