TRUSCO Step Drill for Flat Head Screws M4 TSHMM4A 1 Piece

Catalog number: TSHMM4A Features: ●For flat head screws. Applications: ●Workpiece: Cast iron, carbon steel, alloy steel, tool steel, stainless steel, aluminum alloy. Specifications: ●Small diameter (mm): 4.5 ●Large diameter (mm): 7.4 ●Step length (mm): 18 ●Groove length (mm): 35 ●Total length (mm): 75 ●Shank diameter (mm): 6 Material/Finish: ●High speed steel (HSS) Caution: ●Do not use this product if a pilot hole is drilled. ●Cobalt and inorganic compounds are designated as specific chemical substances, but are exempt from regulations because they do not emit dust amounts that cause health problems during normal use.