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Ships within 48 hours · Estimated delivery Sep 6 - Sep 11
Internal Diameter: 9/16"-18
Overall Length: 5-1/8"
Size: 1-5/16"
Rotation only and slow drilling speeds are recommended
Grade: A307
#4 HSS Step Drill Bit (3/16" - 7/8" by 1/16") Quantity:1 Internal Diameter: 9/16"-18Product 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. Brand
