HSS Tap UNC Taper-1/4x20

• 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.

TAPER taps have a lead of eight threads and are used as a starting tap in difficult or high precision holes. Alpha Taper taps can be identified by the single ring 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