Goliath 1" x 10 TPI BSF Spiral Flute HSS-Co5 Tap C20BF3

Applications

• Spiral Flute taps are designed primarily for machine tapping of blind holes
• Fine threads are also used where the length of engagement is limited or where wall thickness demands a fine pitch

Specifications

• British Standard Fine thread form was based upon the British Standard Whitworth (BSW) but has a finer thread (more threads per inch for a given diameter)
• The thread form was first introduced in 1908 and is specified in BS84:1956
• When used on external threads this series has greater tensile stress area than coarse threads of the same size
• HSS-Co (Cobalt) Bright Finish BSF Spiral Flute Machine Tap
• HSS-Co Spiral Flute Taps
• Manufactured from HSS-Co5
• The right hand spiral forces the swarf out of the hole and prevents the chips from clogging at the bottom of the hole or in the flutes, which could cause tap breakage or spoiled threads