Weird one: 3/8CEI but 20TPI
1/4 CEI nuts, bag of 25.
Nice quality and correct Whitworth size head. All British bikes bfore 1969 are bolted together with these.
Nuts 3/8CEI, bag of 10
5/16 CEI nutsExcellent quality, correct Whitworth type head, bag of 10
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