The writing was on the wall for Sudbury after just 44 seconds, when a corner was allowed to drop on the goalline for Hammond to tap in.
His second, an 11th-minute header, was from similar range and he completed his hat-trick in the 25th minute after rounding keeper Alex Archer.
That one owed a little to good fortune as he would have been offside but for Sudbury’s Ryan Henshaw lying injured in his own penalty area.
Hammond struck again in the 32nd minute to complete a rare feat. Not many players, surely, have scored four times for two different clubs in the space of two months, but Hammond nabbed all the goals as Harlow won 4-0 at Redbridge in mid-November.
This time he added another one in the 55th minute before allowing Craig Pope to claim the sixth goal with a neart-post header from a 66th-minute corner.
Keep up-to-date with our exclusive email newsletters.
Subscribe