Trev's Vintage Machine Shop

This is a set of 3/8 British Standard Cycle (BSCy/CEI) Nyloc nuts with a standard 26tpi thread, made from stainless steel.

Each nut has a nylon insert that grips the male thread, holding the nut safely and securely in position. They resist coming loose under vibration or torque.

These are available in the following sizes:

Thread sizeWidth across flatsDepth
3/8 BSCy (26 TPI)0.600 in0.465 in


They are sold in packs of 2, 4, 6, 8 or 10 nuts. These are high quality bar turned nuts with machine cut threads. They are new old stock and in brand new condition. All items are dispatched quickly via Royal Mail 2nd Class, with 1st Class available at extra cost.

Not what you want? Return the item unused for a refund.

Please check my feedback, I try very hard to get things right. Any problems at all just let me know.

Free postage to UK mainland only. If you have any questions then please ask.