Roofing Bolts with Square Nuts - Zinc M6 x 60 Manufactured with a large flat head, which distributes the load across the fixing to increase the clamping effectiveness. Making it ideal for clamping thin sheet metal, plastic and wood. Head Ø (mm) 14 Substrates Hardwood, Softwood, Plastic, Steel, Thin Sheet Metal Finish Zinc MOQ 1 Point Type B Point Thread L (mm) 60 Head Type Dome Corrosion Rating (1-5) 1 - Clean, dry & low humidity environments Thread Type Metric Nut Size (mm) M6 MOQ Increment 1 Material Carbon Steel Recess Type Cross Nut Socket Size (mm) 11 Nut Type Square Included Items M6 Square Nuts Thread Ø (mm) M6 Thread Coverage Fully Threaded