No. The 5040 came with a single lever 6 speed tranny as standard, and had the option of a creeper unit that upped the speeds to 9. The 5045 and 5050, however, came standard with the 8 speed tranny, with the optional creeper unit providing 12.
The 5040 with a creeper drive unit in place will provide a ground speed of .48MPH @ 2400RPM, or .24MPH @ 1200RPM in first gear.
BTW, the 5040 is NOT a Fiat-built tractor--it was built in Romania by Universal tractors, and patterned after the Fiat tractors. The 5045 & 5050 models are true Fiats.