Graco RS Operation And Repair Manual page 60

Accessories
5th digit = pattern width code. Double number to get pattern size at 18 in. (450 mm). Example: 5 = 10 in.
(250 mm) pattern at 18 in. (450 mm) distance to target.
6th digit = orifice size code. Number roughly matches a 0.010 in. (0.254 mm) increment of the angled hole dia.
Exp: 5 = 0.052 in. (1.32 mm) dia. angled holes.
 Approximate pattern width at 18 in. (45 cm) to target. Actual pattern width varies depending on various conditions.
60 3A0232ZAA