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This item: Alpha UNFHB78 7/8" x 14" UNF Bottoming HSS Tap $99.95
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- Alpha HSS Hand Taps are precision manufactured in Europe to ISO529 standards.
- HSS Hand Taps are general purpose taps suitable for hand and machine operation, and are suitable for production use.
- 2N Tolerance for optimum thread fit that balances fastener performance, manufacturing, economy and convenience.
- Suitable for use in Steel, Aluminium, Copper, Brass etc.
- Always use lubricant. Click here for our range.
BOTTOMING taps have a lead of two threads and are used when tapping blind holes. Usually preceded by a taper or intermediate tap. Alpha bottoming taps can be identified by their plain shaft, they have no rings on the shaft near the driving square.
- Diameter: 7/8mm
- Pitch: 14mm
- Overall length: 80mm
- Shaft Diameter: 18mm
- Drive Square: 14.5mm
- Tapping Drill Size: 20.50mm