Lawn Mower and Lawn Tractor Hitch Pins
Choosing the right lawn mower trailer hitch pin matters more than it looks. The pin is the small but critical link between a garden tractor and a towed cart, aerator, spreader, or dethatcher, and the wrong size or style can create slop, noise, and unexpected uncoupling. A lawn tractor trailer hitch pin typically secures a clevis or bracket connection at the rear drawbar, but owners still need to assess hole diameter, usable length, retaining method, and the weight being pulled. Matching the pin to that towed load helps keep ground-engaging attachments tracking correctly without overloading the machine or the hardware.
The direct answer
For most lawn and garden tractor drawbars, a straight hitch pin with a hairpin cotter or a linchpin retainer is the practical replacement, sized to fill the existing hole in the tractor bracket and the mating tongue without excessive side clearance. A common lawn mower trailer hitch pin will use a 1/2-inch or 5/8-inch diameter, but hole size must be confirmed with calipers or a drill-bit test before purchase. Length should allow the pin to pass fully through both ears of the hitch and leave enough exposed shank for the retaining clip.
The choice depends on the connection, not just the advertised pin name. If the towed attachment has a flat tongue with a single hole, a plain pin and retaining clip works well. If the mower has a slotted drawbar or a sleeve-style hitch, a longer pin may be needed to bridge the assembly. A pin that is too short will not accept the retainer, while a pin that is far too long can catch on turf or allow the tongue to slide excessively. The immediate fix is to measure the coupled stack height before buying a replacement.