PART NO.  SPL.PAGE  DESCRIPTION                                                           
AJA5028   15.M.3    Three-way piece for rear axle (early production 1500 cars) -
	changed to 3H2424 Com.(C)27989 (disc wheels), (c)28540 (wire wheels)
3H2424    15.M.3    Three-way piece for rear axle -Com.(C)27989 (disc wheels), 
    (C)28540 (wire wheels) -was AJA5028 for earlier cars
3H2424    16.M.5    Three-way piece -rear axle -(hyd.pipes +fittings, 1600 and 1600-MK-II)

3-way fitting for brake pipes on rear axle. Two different fittings with different threads.
AJA5028 for early 1500 has 3/8-24-UNF thread in top port, 3/8-20-BSF hread in side ports.
3H2424 for later cars has 3/8-24-UNF thread in all threee ports.
The through hole is 9/32-inch bore to accept a 1/4-inch bolt.