Now In: Tools → Tri-Ultra Cut → Multi-Diameter Step Drills: Type 78-UB
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Special moly alloy steel. Gold surface treated for maximum lubricity. Dual flute construction drills clean accurate holes in thin materials, quickly and easily. Use for all this metals, rigid plastics such as Plexiglas and wood or composite materials with a thickness equal to or less than the step thickness. When drilling steel with 1/8" or greated thickness, a starter hole of the smallest step diameter will speed the drilling process
- Step drills make the job easy with accurate incremental stephs that reduce the potential for burrs.
- 3 flats on shank for positive chuck grip-no slide.
- Gold surface treatment for addid lubricity and rich quality appearance.
- Wide range of sizes to cover almost all common hole diameters
- All flute, diameter and point surfaces are finish ground from hardened blanks for long lasting cutting edges.
- Double flute construction virtually eliminates drill walking.
| EDP# |
Size |
# of
Hole Sizes |
Range |
Shank
Size |
Step
Incrments |
Step
Thickness |
| 800700 |
1/8-1/2 |
13 |
1/8-1/2 |
1/4 |
1/32 |
1/8 |
| 800701 |
3/16A |
6 |
3/16-1/2 |
1/4 |
1/16 |
3/8 |
| 800702 |
3/16 |
12 |
3/16-7/8 |
3/8 |
1/16 |
1/8 |
| 800703 |
1/4-3/4 |
9 |
1/4-3/4 |
3/8 |
1/16 |
5/32 |
| 800704 |
9/16-1 |
8 |
9/16-1" |
3/8 |
1/16 |
5/32 |
| 800710 |
13/16 |
10 |
13/16 - 1-3/8 |
3/8 |
1/32 |
5/32 |
| 800711 |
1/4 KO |
10 |
1/4 - |
3/8 |
1/8 |
See Note |
Note: EDP# 800711 Extra length stephs at 7/8, 1-1/8 & 1-3/8. For conduit knock-outs.
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