Craftsman T110 (Lawn Tractor, 42" Deck) Blade Bolt Torque
The blade bolt torque on the Craftsman T110 (Lawn Tractor, 42" Deck) is 70–90 ft-lb, using a hex flange nut. Blade spindle HEX FLANGE NUT, not a bolt. Craftsman T100 Series instruction manual 769-16711A (model CMXGRAM1130036 = T110 42"), p.29: "Use a torque wrench to tighten the blade spindle hex flange nut to between 70 ft-lbs and 90 ft-lbs." Nut size and socket are not stated.
What's the exact spec for the Craftsman T110 (Lawn Tractor, 42" Deck)?
Torque: 70–90 ft-lb. Thread: hex flange nut. Threadlocker: Not called for in the Craftsman manuals cited below. Blade spindle HEX FLANGE NUT, not a bolt. Craftsman T100 Series instruction manual 769-16711A (model CMXGRAM1130036 = T110 42"), p.29: "Use a torque wrench to tighten the blade spindle hex flange nut to between 70 ft-lbs and 90 ft-lbs." Nut size and socket are not stated.
Step-by-step Craftsman T110 (Lawn Tractor, 42" Deck) blade-bolt reinstall
1) Disconnect the spark plug and engage the parking brake. 2) Block the blade with a 2×4 wedged against the deck shell — never your hand. 3) Use a 1/2" drive breaker bar with an impact socket sized to the blade bolt to break the bolt loose. 4) Clean threads with brake cleaner and inspect the bolt for stretch. 5) Reinstall with no threadlocker. 6) Torque to 70–90 ft-lb in one smooth pull with a calibrated torque wrench. 7) Re-check after the first hour of cutting.
Common Craftsman T110 (Lawn Tractor, 42" Deck) blade-bolt mistakes
Over-torque past spec stretches the bolt past yield — it will not hold the next reinstall. Under-torque lets the blade walk loose at full RPM, which destroys the spindle key and balance. Using a 12-point socket on a rusted bolt rounds the head; always use 6-point. The Craftsman walk-behind manual prints its spec in inch-pounds (450–600 in-lb). Many torque wrenches read ft-lb only — that is 37.5–50 ft-lb; do not set 450 on a ft-lb wrench.
What socket fits the Craftsman T110 (Lawn Tractor, 42" Deck) blade bolt?
A 6-point impact socket sized to the blade bolt — the manual doesn’t state an exact size, so confirm it against the bolt head before buying one on a 1/2" drive breaker bar. A 12-point socket can be used in a pinch on a clean, sharp-edged bolt head — never on a rusted bolt.
Related lookups
- All Craftsman Blade Bolt Torque Specs
- All Mower Brand Blade Specs
- Wrench & Socket Size Finder
- Craftsman M105 21" Push Mower (450–600 in-lb (37.5–50 ft-lb))
Loading interactive lookup…