The John Deere Z510A mower blade part number found is M154202. The blade set part numbers found are GY20683 and GY20684. The blade measurement captured is thickness 0.204 in (5 mm) and center hole 0.62 in (16 mm).
John Deere Z510A Mower Blade Size and Part Numbers
| Mower blade part number | M154202 |
|---|---|
| Mower blade set part number | GY20683 and GY20684 |
| Blade thickness | 0.204 in (5 mm) |
| Blade center hole size | 0.62 in (16 mm) |
Blade Size Comparison Chart
Blade thickness comparison
John Deere Z510A Blade Notes
| Blade note | The John Deere Z510A blade listing captured here shows single blade part number M154202, blade set part numbers GY20683 and GY20684, and thickness 0.204 in (5 mm) and center hole 0.62 in (16 mm). Confirm the number against the deck tag, old blade stamp or official parts diagram before ordering |
|---|---|
| Fitment note | Blades are cheap until you buy the wrong set twice. On the John Deere Z510A, confirm part number, deck size and blade count before buying |
John Deere Z510A Mower Blade FAQ
Can you modify a John Deere Z510A blade center hole to fit?
Do not do that. The captured center-hole detail is 0.62 in (16 mm). Grinding or drilling a mower blade can ruin balance and create vibration
Should you buy one John Deere Z510A blade or a full set?
The single blade number captured is M154202, and the set number captured is GY20683 and GY20684. If one blade is bent from damage, one may be fine; if they are worn down, replacing the full set usually gives a cleaner cut
Mistakes do happen. Blade specs can change by year, mower deck, spindle, serial range and regional parts catalog. Please check the operator manual, old blade stamp, deck tag and official John Deere parts catalog before ordering replacement blades.

