Goliath No. 8G x 36 TPI UNF Spiral Point | AIMS Industrial

Product Features

• This allows a stronger cross section throughout the tap

Applications

• Primarily designed for use in through holes, these taps can be used in blind holes provided that there is ample clearance beyond the threaded section to accommodate the swarf
• Fine threads are also used where the length of engagement is limited 1-1/4 or where wall thickness demands a fine pitch

Specifications

• Unified National Fine (UNF) thread form was introduced in 1948 as an attempt to standardise thread forms in the USA, Canada and the UK
• The thread profile of UNF is the same as for metric threads and is described in the JIS B0206 standard
• When used on external threads this series has greater tensile stress area than coarse threads of the same size
• HSS-Co (Cobalt) Bright Finish UNF Spiral Point Machine Tap
• HSS-Co Spiral Point (Gun Nose) Taps
• Manufactured from HSS-Co5, this modern design tap uses straight flutes supplemented by angular cutting faces at the point to produce a fine finish on the threads
• Spiral point taps, also known as 'Gun nose taps', have straight flutes supplemented by angular cutting faces at the lead
• The design of the cutting portion propels the swarf ahead of the tap leaving the flutes clear for the flow of coolant to the cutting teeth
• The advantages of a gun nose tap are the shearing action of the angular cutting faces, which produces a fine finish on the threads and shallower flutes
• Shallower flutes achieve a stronger cross section allowing the tap to withstand greater cutting forces