BA, Full Nut, Brass.
6BA, 4BA, 2BA, 1BA, 0BA, Full, Hex-Nut, Brass, DIN 934.
Fixaball.co.uk sells all sizes of British Association (B.A), Brass, Full Nuts, at the best internet prices, with free, first class delivery.
Orders placed before 2pm are usually dispatched same day (Mon-Fri).
Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads' friction, a slight stretch of the bolt, and compression of the parts.
Nuts are most commonly hexagonal in shape. It is important to use the correct sized spanners to avoid, ‘rounding off,’ the nut. Otherwise, if using an adjustable spanner you must ensure it is full tightened over the flat faces. Other specialized shapes exist for certain needs, such as wingnuts for finger adjustment and captive nuts (eg cage nuts) for hard to reach areas.
UNITS OF MEASUREMENT FOR THREAD TYPES
British Association (BA) screw threads, named after the British Association for Advancement of Science, were devised in 1884 and standardised in 1903. Screws were described as "2BA", "4BA" etc. to represent their unit of measurement eg. 6BA happens to be 6mm diameter (metric equivalent). BA threads are specified by British Standard BS 93:1951 "Specification for British Association (B.A.) screw threads with tolerances for sizes 0 B.A. to 16 B.A."
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