Drive:combination,pozi,philips,slotted.

Thread Type:ABtype

HeadType:countersunk,wafer,pan,hexwasher,pan framing.

Diameter:M3.5(#6)M3.9(#7)M4.2(#8)M5.5(#12)M6.3(#14)

Length：From19mm（3/4inches)to254mm(10inches)

Material:c1022

Finish:yellow/bluezinc plated/nickel plated/others