Irwin Unibit Step Drill Bit, #4 3/16" - 7/8"

$42.99 

In Stock - Estimate Delivery Date

Exclusive single radial concave flute design allows the drilling of perfectly round holes in thin materials. Used for steel, copper, brass, aluminum and other thin materials. Constructed of industrial grade high-speed molybdenum steel, heat-treated to a hardness of between 61 and 63 on the Rockwell ``C'' scale assures maximum strength and long life. Self-starting tips will not skid like standard twist drill bits. Laser-marking on the bit. Fastest step depth to a 1/2" knock-out. Especially suitable for making perfectly round, miniature push button and pilot light holes. 3/16" to 7/8" hole size, in 1/16" increments. 1/8'' step thickness, 3/8'' shank size. This Irwin Unibit Step Drill Bit is one of many top quality items in our Step Drill Bits department.

Aubuchon Item # 115118