Walter Surface Technologies
Walter Surface Technologies 01M561 Prentice Drill Bit 61/64" 135deg
Heavy-duty cobalt drill bit drills 61/64 inch holes in steel and stainless steel with a 135-degree point that eliminates pre-drilling
- TypeElectric Drills
- Drills more holes faster with exclusive point geometry eliminating pre-drilling
- Extra hard cobalt blend tips extend life between re-sharpenings
- Three flats on shank prevent slippage inside ½” chuck
- Special bronze SST treatment boosts cutting performance
- Heavy-duty 61/64" bit drills mild steel, non-ferrous and stainless steel
Heavy-Duty Large-Diameter Drill Bit
Walter SST+ ½” Prentice bits are built for portable drills, drill presses and magnetic base drills with a ½” chuck. The cobalt blend and extra-hard tips extend the interval between re-sharpenings. Three flats on the shank prevent slippage during high-torque drilling. Exclusive point geometry removes the need for a separate pilot hole.
135-Degree Point and ½-Inch Chuck Limit
The 135-degree point angle is optimised for the listed materials but restricts use to machines that accept a ½-inch shank. Flute length of 3-1/8 inches sets the maximum depth per plunge without chip clearing. Overall length of 6 inches fits standard industrial equipment but may not reach deep cavities without an extension.
61/64-Inch Diameter Capacity and Headroom
The 61/64-inch drill diameter handles mild steel, non-ferrous metal and stainless steel in a single pass. Cobalt construction resists heat buildup for longer continuous runs. Users needing larger holes or smaller step sizes will need a different bit. The bronze SST treatment adds wear resistance but does not change the fixed cutting diameter.
Highlights
- Drills more holes faster with exclusive point geometry eliminating pre-drilling
- Extra hard cobalt blend tips extend life between re-sharpenings
- Three flats on shank prevent slippage inside ½” chuck
- Special bronze SST treatment boosts cutting performance
- Heavy-duty 61/64" bit drills mild steel, non-ferrous and stainless steel
Specifications
| Brand | WALTER SURFACE TECHNOLOGIES |
|---|---|
| Type | Electric Drills |
Questions about this item
Should I choose the 61/64" diameter or a different size?
Select the 61/64" bit when you need that exact hole diameter in mild steel, non-ferrous metal or stainless steel; other diameters are separate items.
What does the 135-degree point angle do for me in a real machine?
The 135-degree split point starts on contact, removes the need for a pilot hole and cuts faster in portable drills, drill presses or magnetic base drills.
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