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UNC Carbon

Carbon Tap UNC Bottoming-1/4x20

Product Code: UNCCB14

Key Features
Precision manufactured in Europe to ISO529 standards
Suitable for hand and machine operation, and are suitable for production
2N Tolerance for optimum thread fit
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Technical Specifications
Brand ALPHA
Subcategory UNC Carbon
Diameter (in) 1/4
Type of Measure UNC
Drill Size (mm) 5.1
Head Type Bottoming
Material Carbon
OAL (mm) 66
TPI 20
Barcode 9342386031713
Category UNC Carbon
Weight (gr) 15.00
Box Quantity 10.00
Carton Quantity 10.00
Order Quantity 1
Unit Of Measure
Box: 10
Carton: 10
  • Alpha Carbon Hand Taps are precision manufactured in Europe to ISO529 standards.
  • Carbon 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: 1/4mm
  • Pitch: 20mm
  • Overall length: 50mm
  • Shaft Diameter: 6mm
  • Drive Square: 4.9mm
  • Tapping Drill Size: 5.20mm
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