- Premium High Speed Steel
- Spiral point drives the chips forward to eliminate clogging.
- Bottoming chamfer used mostly for tapping blind holes requiring full threads near the bottom of the hole.
- Pitch diameter is .005" to .0055" larger than the basic pitch diameter. Used in applications calling for plating after tapping or to allow for shrinking after heat treating.
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|Spiral Point Bottom|
|(Picture may not be an exact match)|