www.Austin7Ulster.com › 5/16 BSF Nyloc lock nut 5/16 BSF Nyloc lock nut £0.35 Zinc plated Zinc plated Add To Cart Added! You Might Also Like Standard size Valves (Exhaust or Inlet) from £10.50 Front Engine Mounting Stud & Nut £9.99 Sold out Rear Main Oil Seal Plate c/w Modern seal (1930-1939) £26.99 Pair of Inlet Manifold to Exhaust Manifold Gaskets £1.60 Starter Dog / Crankshaft Tab / Lock Washer £0.85