Specification:

 Hex washer head self tapping screws
1.Material:Carbon Steel
2.Size:4.2*13-5.5*60
3.Surface:Zinc plated
4.Sharp Nail

Baking finish self drilling roofing screws

Head: PAN, COUNTERSUNK, WAFER, HEXWASHER, PANFRAMING, BUGLE   

Drive:COMBINATION, PHILIPS, POZI, SLOTTED

Thread:COARSE,FINE,WING TEKS

Diameter: 3.5mm/3.9mm/4.2mm/ 4.8mm/ 5.5mm/ 6.3mm

Length: 3/8''-5''

Material: C1022
Surface treatment: black or grey phosphate, zinc plated

Packing: 25kg/ctn or small cartons as customer’s required. 

If any appeals to you,pls free to message us,we will reply you asap.Thanks!