www.Austin7Ulster.com › 5/16” BSF Nut - cylinder head etc 5/16” BSF Nut - cylinder head etc from £0.25 5/16” BSF Steel Nut for cylinder head studs etc 5/16” BSF Steel Nut for cylinder head studs etc Quantity: Select Quantity Set of 14 Price each Add To Cart Added! You Might Also Like Gearbox selector ball & spring £1.50 Gearbox / Fabric Coupling Double Ended Stud £4.75 Silicone Rubber Block to Crankcase Base Gasket £5.99 Knurled Knobs for Alloy Valve Chest Cover (2 off) £12.00 Sold out Wide Fan Pulley (Coil type) £18.99