Products

HSS Step Drill

HSS Step Drill - STRAIGHT FLUTE WITH TRIANGLE SHANK

Straight Flute / Spiral Flute

HSS Step Drill Bit

Specification
 
Head design X TYPE
To fix the tip on correction position while drilling and durable.
It is perfect and convenient for worker to drill multiple-size hole with a single step drill bit.
Diameter marked on the drill bits.
Specification

 

1/4" Impact Quick Changes Type

MAX DIAMETER UP TO 1-1/4"

unit:mm

S-R-
Step Range
Steps Shank of Diameter
M2 M35
4-12 5 6.35 6.35
4-12 9 6.35 6.35
3-12 10 6.35 6.35
3-14 13 6.35 6.35
4-20 9 6.35 6.35
4-22 10 6.35 6.35
4-24 11 6.35 6.35
4-30 14 10 6.35
4-32 15 10 6.35
4-39 13 12 12
5-28 7 10 6.35
5-35 13 12 12
6-18 7 8 6.35
6-20 8 8 6.35
6-30 13 10 6.35
6-35 13 12 12
6-37 11 12 12
6-38 12 12 12
1/8"-1/2" 7 1/4" 1/4"
1/8"-1/2" 13 1/4" 1/4"
1/8"-3/8" 5 1/4" 1/4"
1/4"-3/4" 9 3/8" 1/4"
1/4"-7/8" 11 3/8" 1/4"
1/4"-1-1/8" 16 1/4" 1/4"
1/4"-1-1/4" 16 1/4" 1/4"
1/4"-1-3/8" 10 3/8" 3/8"
3/16"-1/2" 6 1/4" 1/4"
3/16"-9/16" 7 1/4" 1/4"
3/16"-7/8" 12 1/4" 1/4"
9/16"-1" 8 1/4" 1/4"
13/16"-1-3/8" 10 1/2" 1/2"