BA Self Colour Aerotight Lock Nuts (P Type)

BA Nuts

Arun Fasteners stock a range of BA (British Association) nuts and screws. We have now listed various BA nuts for sale on ebay.

www.ebay.co.uk/arunfasteners

BA threads are used in miniature instruments and modelling and are popular in the model railway community. Somewhat opposite to other thread sizes, the largest is 0BA, up to the smallest we stock – 10BA.

BA Self Colour Aerotight Lock Nuts (P Type), (packs of 25 nuts), available in 1BA, 4BA & 6BA

BA	Thread pitch	Outside diameter	Threads density	Outside diameter	Spanner
(mm)	(mm)	(in⁻¹)	(in)	(mm)	(in)
0	1.00	6.00	25.40	0.2362	10.5000	0.4134
1	0.90	5.30	28.22	0.2087	9.2750	0.3652
2	0.81	4.70	31.36	0.1850	8.2250	0.3238
3	0.73	4.10	34.79	0.1614	7.1750	0.2825
4	0.66	3.60	38.48	0.1417	6.3000	0.2480
5	0.59	3.20	43.05	0.1260	5.6000	0.2205
6	0.53	2.80	47.92	0.1102	4.9000	0.1929
7	0.48	2.50	52.92	0.0984	4.3750	0.1722
8	0.43	2.20	59.07	0.0866	3.8500	0.1516
9	0.39	1.90	65.13	0.0748	3.3250	0.1309
10	0.35	1.70	72.57	0.0669	2.9750	0.1171

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