#4 HSS Quick Change Hex Shank Step Drill Bit (3/16" - 7/8" by 1/16") BoltsandNuts.com 5xDia): 12mm

5xDia): 12mm

Case Hardened Steel Serrated Hex Flange Locking Nuts

Part Number DWDTSCO1-1/4

trade size

Part Number: BIT-DWDRSD1-7/32

#4 HSS Quick Change Hex Shank Step Drill Bit (3/16" - 7/8" by 1/16") BoltsandNuts.com 5xDia): 12mmProduct Description Step drills have single radial concave flutes to create a perfectly round hole in metal, plastic wood and other thin materials without center punching. Constructed of industrial grade high speed molybdenum steel, heat treated and temperature for long life. Self starting tip. No center punching needed. Automatically deburrs top side of hole. Ideal for steel, copper, aluminum and other thin materials. They have a bright finish with a