Bordo BA 1 x 0.9mm BA Bottoming HSS Hand Hand and Machine Tap

• HSS BA Bottoming Hand and Machine Tap

• Like the Whitworth thread, it has a rounded root and crest, but the included angle is 47.5°

• British Association - in 1884 the British Association for the Advancement of Science adopted a thread form and series

British Association - in 1884 the British Association for the Advancement of Science adopted a thread form and series, primarily for use in precision equipment. Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use.