Roofing Nails/Umbrella Head Nails Material: Q195,Q235 Certificate: ISO9001:2000 Special Manufacturer&Exporter Available Sizes ... , carriage bolts, stud bolts, eye bolts, U bolts, masonry bolts, roofing bolts.Nuts: spring nuts, T nuts, K nuts, rivet nuts ... , wood screws.Rivet: solid rivet, blind rivet, pop rivet.Nails: roofing nails, twist nails, double head nails.Our company is the ...