DISSTON COMPANY
DISSTON COMPANY 504704 1/2" x 12" Extra Length High Speed Steel Black Oxide Drill Bit
Extra-long 12-inch high-speed steel bit with 135-degree point and four cutting edges drills wood, plastic, wallboard, plywood and soft metals without walking
- 1/2" diameter suits larger holes
- 12" extra length reaches deep workpieces
- 135° point with four cutting edges prevents walking
- Black oxide tempering cuts friction and aids chip flow
- High-speed steel handles wood, plastic, soft metals and occasional stainless
1/2" x 12" High Speed Steel Drill Bit
The DISSTON COMPANY 504704 is an extra length drill bit made from high speed steel with a black oxide finish. It features a 135 degree point angle with four cutting edges that eliminate walking and provide fast penetration. The tempering treatment reduces frictional resistance and improves chip flow. This accessory is designed for use with power drills in workshop and job site applications.
Upgrade From Standard Length Bits
This 12 inch extra length bit replaces shorter standard bits when drilling through thick workpieces or reaching confined spaces. The jump is worth it when the material depth exceeds the reach of a typical jobber length bit. The black oxide coating extends service life compared to uncoated high speed steel in the same dimensions. The 135 degree point improves starting accuracy on curved or slippery surfaces.
Suited For Wood, Plastic And Soft Metals
This bit suits tradespeople and DIY users drilling wood, plastic, wallboard, plywood, aluminium, brass and bronze. It handles occasional work in stainless steel and other hard metals. Builders who need a second bit for high volume production drilling in hard alloys should look at something else. Users requiring a reduced shank for smaller chucks will need a different shank configuration.
Highlights
- 1/2" diameter suits larger holes
- 12" extra length reaches deep workpieces
- 135° point with four cutting edges prevents walking
- Black oxide tempering cuts friction and aids chip flow
- High-speed steel handles wood, plastic, soft metals and occasional stainless
Specifications
No published specifications for this item yet.
Questions about this item
What chuck size does the 1/2" shank of the 504704 bit require?
The 1/2 inch shank fits a drill chuck that accepts 1/2 inch or larger bits.
How do I start a hole with the 135 degree point without the bit walking?
The 135 degree point with four cutting edges is designed to self-centre; apply steady pressure and let the point engage before increasing speed.
When should I replace this high speed steel bit?
Replace the bit when the black oxide coating wears off the cutting edges or when drilling in wood, plastic or soft metals becomes noticeably slower.
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