HWF head self drilling screw with Dome washer

21六角钻尾，碗型垫片
넳 넲

Head Type: Hex Washer Flange
Thread Type: double thread with knurling
Drive: Hexagen
Washer: EPDM Dome washer
Point: PT #3, #4, #5
Material: C1022A
Diameter: 5.5mm (#12) / 6.3mm (#14)
Lenght: From 90mm 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

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Tianjin Primo Technology Co., Ltd. is a professional company for the fastener 
manufacture and exporter in China. Our company have 200+ set equipment for the fastener manufacture, the annual production capacity more than 5000 tons, Our products including drywall screws, chipboard screw, self tapping screws, self drilling screws, blind rivets, coil nails, 
strip nails, concrete nails, staples, anchors, thread rod, bolts, nuts and washers etc.