220 Usable Length 1 7/16"
so then the threads may engage with the steel
Dock Washers are significantly thicker than most other washers and have a greater surface area than Fender Washers
Your metal must be 1/8" thick in order for the wings to break off without making to large of a hole for engagement
300 Socket Size: 22mm Tensile Strength
Silver & Deming Drills (Large Diameter) Size:5/8" 220 Usable Length 1 7/16"Silver & Deming Drills Description: Superior strength and durability. Black and gold surface treatment holds lubricant for smoother drilling. All shanks are reduced to 1 2". Application: Low carbon steels, alloyed steels, steel drop forgings, grey cast iron, titanium, stainless steel, nimonic alloys, manganese, spring steels and armor plate.