Goliath 7/8" x 9 TPI BSW 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

Specifications

• This thread form was developed by Sir Joseph Whitworth in 1841
• The thread form has rounded roots and crests and is specified in BS84:1956
• HSS-Co (Cobalt) Bright Finish BSW 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
• British Standard Whitworth angle of thread is 55 degrees as opposed to 60 degrees in Metric and Unified threads
• Shallower flutes achieve a stronger cross section allowing the tap to withstand greater cutting forces