The highest-wear connection points
Pins and bushes are where an extended front concentrates its loads. They are inexpensive relative to what they protect, and replacing them on schedule is materially cheaper than machining out a worn boom eye later.
Ordering
Send the machine class, the front configuration and photographs of the existing pin including any stamping. Pin dimensions vary between fronts fitted to the same carrier, so the carrier model alone is not enough to identify the part.