5mm x 0.8mm, Metric, Zinc plated class 10.9 steel

Metric Fasteners, 5mm x 0.8mm, Zinc plated class 10.9 steel
Flange bolts Flange bolts have a flange on the bottom of the head that distributes the load like a washer.	Nuts Nuts have internal machine threads, for use with machine thread bolts and screws.