www.Austin7Ulster.com › Cylinder Block - STEPPED short manifold Stud 5/16"BSF to 1/4" BSF Cylinder Block - STEPPED short manifold Stud 5/16"BSF to 1/4" BSF £2.90 STEPPED stud 5/16” BSF to 1/4” BSF. STEPPED stud 5/16” BSF to 1/4” BSF. Add To Cart Added! You Might Also Like Standard size Valves (Exhaust or Inlet) from £8.50 Bell housing / Crankcase to Gearbox Stud BSF or BSW £1.75 Cylinder Block - STEPPED Base Stud 3/8" to 5/16BSF £3.20 5/16” BSF Nut - cylinder head etc from £0.25 SET OF 4 - Exhaust Downpipe Flange Bolts and Brass Nuts 1/4” BSF £5.99