Type Dimension(mm) d s r a≈ d1 H PM31005F 10 4.5 0.5 2.4 4.2 14.5 PM31005FL PM31305F 13 5.5 0.5 3.4 5.2 19 PM31305FL PM31310F 13 5.5 1 4.4 5.2 18.5 PM31310FL PM31610F 16 7 1 5.4 6.2 23 PM31610FL