HWF head double thread self drilling screw

20大法兰六角钻尾,双牙

Head Type: Hex Washer Flange
Thread Type: double thread with knurling
Drive: Hexagen
Washer: EPDM washer, PVC washer
Point: PT #3, #4, #5
Material: C1022A
Diameter: 4.2mm (#8) / 4.8mm (#10) / 5.5mm (#12) / 6.3mm (#14)
Lenght: From 13 mm to 250 mm
Finish: Black / Grey Phosphated,Yellow / Blue White Zinc Plated, Nickel Plated, Painted, Ruspert
Sample: Available
Packing: bulk in bag/ cartons, customized box and carton