HSS Tap UNF Taper-1/4x28

• 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: 28mm
• Overall length: 50mm
• Shaft Diameter: 6mm
• Drive Square: 4.9mm
• Tapping Drill Size: 5.50mm