BA Brass Hexagon Half Lock Nuts

BA Brass Hex Half Nuts
BA Brass Hex Half Nuts (All pictures are shown for illustration purposes only. Actual product may vary)

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 Brass Hexagon Half Lock Nuts (packs of 50), available in 1BA, 2BA, 3BA, 4BA, 5BA, 6BA, 7BA & 8BA

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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