Cleveland
Cleveland C94570 Countersink 5/8 in 82° Cobalt
5/8 in cobalt countersink cuts precise 82° chamfers for clean fastener seating in metal
- TypeCountersinks & Sets
- 82° angle cuts clean countersinks for flat-head fasteners
- Cobalt steel resists heat and wear in hard metals
- 5/8 in diameter matches common hole sizes
- Bright uncoated finish reduces friction during cutting
- Designed for power and pneumatic tool chucks
Countersink for 5/8 in holes
The Cleveland C94570 is a single-flute countersink cut from cobalt steel with an 82-degree included angle. It is sized for 5/8 inch holes and finished bright without coating. The tool suits machinists and maintenance crews who need clean chamfers in ferrous alloys.
Cobalt holds edge under heat
Cobalt alloy retains hardness at the temperatures generated by extended drilling in steel or stainless stock. The bright finish reduces galling and allows coolant to cling during long production runs. Chip evacuation stays consistent because the single flute clears swarf without packing.
Replaces worn high-speed steel bits
Shops that re-sharpen standard HSS countersinks multiple times per shift will see longer intervals between tool changes. The step up is justified when workpiece material work-hardens quickly or when batch sizes make frequent indexing costly. It is not for soft non-ferrous metals where uncoated HSS performs adequately.
Highlights
- 82° angle cuts clean countersinks for flat-head fasteners
- Cobalt steel resists heat and wear in hard metals
- 5/8 in diameter matches common hole sizes
- Bright uncoated finish reduces friction during cutting
- Designed for power and pneumatic tool chucks
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Countersinks & Sets |
Questions about this item
Does the 82° cobalt countersink generate noticeable heat during extended use?
The cobalt construction resists heat buildup better than standard steel, keeping the 5/8 in cutter cooler during prolonged drilling sessions.
What shank type does the C94570 need to fit my drill?
It uses a standard straight shank that fits any 1/2 in or larger drill chuck, so no special adapter is required.
Will this 82° countersink work with my older high-speed steel drill bits?
Yes, the 82° angle matches the standard countersink angle used with traditional HSS bits, so they pair without issue.
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