Norseman Step Drills Ultra Bits | Coremark Metals

Norseman Step Drills Ultra Bit

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Product Overview

Norseman Step Drills Ultra Bit™ Multi-Diameter

Fractional Size

Ideal For: Metals, Plastic, Wood

- Gold Oxide Electrician Step Drill Type 78-AG
- Special axial and Radial flute design increases work piece penetration.
- Duel flute contruction drills clean accurate holes in thin materials, quickly and easily.
- 3 flats on shank give positive chuck-grip.
- Gold oxide provides low temperature stress relief that enhances lubricity, reduces friction, and increases tap toughness.

Free Shipping*

On all hardware item purchases of $99.99 or more.

Exclusions include shipping to Alaska or Hawaii, metal items, and processing services. Free shipping options will be reflected during the checkout process.

Specifications

DETAILS

Size Hole Sizes No. Range Shank Size Step Increments Step Thickness
1 13 1/8" - 1/2" 1/4" 1/32" 1/8"
2* 8 1/4" - 1" 3/8" 1/16" 5/32"
3 9 1/4" - 3/4" 3/8" 1/16" 5/32"
4 6 3/16" - 1/2" 1/4" 1/16" 3/8"
7 1 1/4" - 7/8" 3/8" 1/16" 1/16"
8 12 3/16" - 7/8" 3/8" 1/16" 1/8"
9 3 7/8" - 1-7/32" 3/8" 7/8" ---
11 2 7/8" - 1-1/8" 3/8" 27/64" 9/64"
12 5 1/4" - 1-3/8" 3/8" 1/8" *SEE NOTE
1/4 A 16 1/4" - 1-1/8" 3/8" 1/16" 1/16"
13/16 10 13/16" - 1-3/8" 1/2" 1/32" 5/32"
* Size 2: Also referred to as 9/16" - 1" No. Range
* Size 12: 7/8", 1-1/8", 1-7/32", 1-1/4", 1-3/8"  (1/2" and 3/4" conduit)


 

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