Best 21-Inch Craftsman Lawn Mower Blades: Top 9 Picks (November 2026)
The best Craftsman 21-inch lawn mower blades include the Grasscool 21 inch Mower Mulching Blade for broad Craftsman model coverage, the Maxpower 331981B 21-Inch Universal Gold Metal Mulching for adaptable mounting options, and the Chway 1Pcs 942-0741a Lawn Mower Blade for a confirmed Bow Tie spindle.
On this page (8 sections)
- How we chose Craftsman 21-inch lawn mower blades
- Compare the blade fit before you choose
- Best Craftsman lawn mower blades for different fit needs
- How do you check Craftsman blade compatibility?
- Does a 21-inch Craftsman mower need a 21-inch blade?
- Should you choose a mulching or 3-in-1 blade?
- When should you sharpen or replace a blade?
- Which Craftsman 21-inch blade should you choose?
The best Craftsman lawn mower blades for many 21-inch walk-behind models are Bow Tie blades in the 942-0741A or CMXGZAM100067 fit family. The right replacement still depends on your mower’s exact model and original blade pattern.
“21 inch” describes the cutting deck or blade length, but it does not identify the center mount. Some Craftsman-compatible options here use a Bow Tie center hole, while others use a 5/8-inch or circular hole.
For the widest named Craftsman coverage, start with Grasscool’s 942-0741A blade. If your mower manual instead names CMXGZAM100129, compare the Oregon blade with the 5/8-inch center hole.
Our picks at a glance
-
1
Best for broad Craftsman model coverageGrasscool 21 inch Mower Mulching Blade
9.7/10 our score
See it on Amazon -
2
Best for adaptable mounting optionsMaxpower 331981B 21-Inch Universal Gold Metal Mulching
9.6/10 our score
See it on Amazon -
3
Best for a confirmed Bow Tie spindleChway 1Pcs 942-0741a Lawn Mower Blade
9.5/10 our score
See it on Amazon
- 4
Check itGICOOL 942-0741A 21 inch Mulching Mower Blade
Best for a single replacement blade - 5
Check itFismiuta 21 Inch Lawn Mower Blade
Best for 3-in-1 mowing - 6
Check itGICOOL 942-0741A 21 Inch Mower Mulching Blades
Best for keeping a spare blade - 7
Check itOregon 21 Inch Lawn Mower Blade
Best for Craftsman 5/8-inch center-hole models - 8
Check itOregon 21 Inch Lawn Mower Blade
Best for Craftsman Bow Tie models - 9
Check itFismiuta 331737B Mulching Blade
Best for circular center-hole models
How we chose Craftsman 21-inch lawn mower blades
We compared the fit numbers, stated mower models, center-hole patterns and mowing styles for these replacement blades. Fit evidence matters most because a blade with the wrong center hole or bolt pattern cannot be treated as a match just because it is 21 inches long.
The products are ordered by their fit details for this search, including named Craftsman model coverage and the mounting information available for each option. Our score weighs specs, features and buyer feedback against what you're shopping for.
Before choosing, find the mower’s full model number on its label and look up the blade part number in the manual. If you can safely inspect the old blade, compare its center opening and outer holes too.
Compare the blade fit before you choose
The best Craftsman 21-inch replacement is the one whose part number and mounting pattern match your mower. This comparison highlights the key differences in the picks below.
| Product | Best for | Deck | Center hole | Mowing modes | Our score |
|---|---|---|---|---|---|
| Grasscool 21 inch Mower Mulching Blade | broad Craftsman model coverage | 21 in | Bow Tie | Mulching, bagging, side discharge | 9.7 |
| Maxpower 331981B 21-Inch Universal Gold Metal Mulching | adaptable mounting options | 1 in with reducing washers | 9.6 | ||
| Chway 1Pcs 942-0741a Lawn Mower Blade | a confirmed Bow Tie spindle | 21 in | Bow Tie | 9.5 | |
| GICOOL 942-0741A 21 inch Mulching Mower Blade | a single replacement blade | 21 in | Bow Tie | 9.4 | |
| Fismiuta 21 Inch Lawn Mower Blade | 3-in-1 mowing | 21 in | Bow Tie | Mulching, bagging, side discharge | 9.3 |
| GICOOL 942-0741A 21 Inch Mower Mulching Blades | keeping a spare blade | 21 in | Bow Tie | 9.2 | |
| Oregon 21 Inch Lawn Mower Blade | Craftsman 5/8-inch center-hole models | 5/8 in | 9.1 | ||
| Oregon 21 Inch Lawn Mower Blade | Craftsman Bow Tie models | 21 in | Bow Tie | 9.0 | |
| Fismiuta 331737B Mulching Blade | circular center-hole models | Circular, 1-7/8 in | 8.6 |
Best Craftsman lawn mower blades for different fit needs
Grasscool leads this roundup because it names several Craftsman models and lists the 942-0741A and CMXGZAM100067 fit family. The other picks serve different needs, including multiple mounting washers, two-blade packs and distinct center-hole shapes.
Grasscool 21 inch Mower Mulching Blade: Best for broad Craftsman model coverage
- 21-inch deck fit
- 942-0741A and CMXGZAM100067 fit numbers
- Bow Tie center hole
- Mulching, bagging and side discharge
Its listed Craftsman fit includes models such as M110, M210, M230 and M320. Check your exact mower model and blade number before ordering.
Pros
- Names several Craftsman models
- Lists multiple compatible part numbers
- Supports three mowing modes
Cons
- Requires a Bow Tie mounting pattern
- Compatibility depends on the exact mower
Grasscool is a strong starting point if your Craftsman mower is among its named 21-inch models. Its fit list includes M110, M210, M230 and M320, and it also names replacement numbers such as 942-0741A and CMXGZAM100067.
The Bow Tie center hole is the key check before ordering. The blade measures 20 7/8 inches long and is made for a 21-inch deck, so compare the shape and dimensions with the blade you are replacing.
Its 3-in-1 design supports mulching, bagging and side discharge. For more options, compare lawn mower blades for mulching.
That gives you options for handling clippings, but the fit must come first.
Choose this when your manual or old blade confirms the part number and Bow Tie mount. If you need help with the job itself, read How to Change Lawn Mower Blades?.
Maxpower 331981B 21-Inch Universal Gold Metal Mulching: Best for adaptable mounting options
- Universal replacement for 21-inch cut mowers
- 1-inch center hole
- Six reducing washers included
- Cover washer included
The included reducing washers offer several mounting-hole sizes for compatible 21-inch mowers. Match the mower's required hardware and blade shape before buying.
Pros
- Includes six reducing washers
- Made for a 21-inch cut
- Made in the USA
Cons
- Does not name specific Craftsman models
- Universal fit still needs careful mounting checks
Maxpower is the most flexible mounting option in this group because it includes a cover washer and 6 reducing washers. The washers range from 3/8 inch to 13/16 inch, while the blade has a 1-inch center hole.
It is described as a universal replacement for 21-inch cut mowers. That wording does not identify a specific Craftsman model, so use the mower’s manual to confirm the correct blade and washer arrangement.
The blade measures 21 inches long and 2 1/2 inches wide. Maxpower says it is made in the USA.
Consider it if your mower calls for a compatible mounting size covered by the included washers. Do not assume the washer set resolves a mismatch in blade shape, length or mower fit.
Chway 1Pcs 942-0741a Lawn Mower Blade: Best for a confirmed Bow Tie spindle
- 942-0741A replacement number
- Bow Tie center hole
- 21-inch deck fit
- Mulching blade
Chway names Craftsman models including M100, M105, M110, M140, M210, M230, M250 and M320. Its Bow Tie pattern must match your spindle.
Pros
- Names a range of Craftsman models
- Provides a specific replacement number
- States the center-hole shape
Cons
- Only fits a Bow Tie spindle
- Model compatibility should be checked against your mower
Chway lists Craftsman models such as M100, M105, M110, M140, M210, M230, M250 and M320. It also gives 942-0741A and related numbers as replacement fits.
The blade’s Bow Tie center hole is a specific fit condition. Chway states that it is only compatible with a Bow Tie spindle, so compare your mower’s center pattern before using the model list as a match.
It is a mulching blade for a 21-inch deck. Its stated dimensions are 21 inches long, 2 1/4 inches wide and 9/64 inch thick.
Choose Chway when the mower model, part number and center-hole pattern all line up. If the mower is already on a stand, our guide to How to Remove a Lawn Mower Blade? covers the removal step.
GICOOL 942-0741A 21 inch Mulching Mower Blade: Best for a single replacement blade
- 942-0741A replacement number
- 21-inch deck fit
- Bow Tie center hole
- 40MnB steel
This single-blade option lists Craftsman models including M100, M105, M110, M140, M210, M230, M250 and M320. Verify both the model and mounting pattern.
Pros
- Names specific Craftsman models
- Lists replacement numbers
- Single-blade pack
Cons
- Bow Tie center hole is required
- Model lists can vary by mower version
GICOOL’s single-blade option names Craftsman models including M100, M105, M110, M140, M210, M230, M250 and M320. It also lists CMXGZAM100067 and several 942-0741A family numbers.
Its Bow Tie center hole matches the fit family described for many other 942-0741A replacements. The stated blade length is 20-30/32 inches, and the blade is made for a 21-inch deck.
This option is made from 40MnB steel and designed for mulching. GICOOL describes its curved blade design as helping circulate grass beneath the deck for finer clippings.
Pick the single-blade pack when you have confirmed the exact Craftsman model and part number. For a broader look at replacement options across brands, compare our best lawn mower blades 21 inch guide.
Fismiuta 21 Inch Lawn Mower Blade: Best for 3-in-1 mowing
- 21-inch deck fit
- Bow Tie center hole
- Mulching, bagging and side discharge
- Lists Craftsman M100 through M320 models
Fismiuta lists replacement numbers including 742-0741A and CMXGZAM100067, along with several Craftsman models. Check the mower's original blade pattern before selecting it.
Pros
- Supports three mowing modes
- Names Craftsman model coverage
- Lists replacement numbers
Cons
- Only fits a Bow Tie spindle
- The stated lift measurement differs from some other Bow Tie options
Fismiuta describes this as a 3-in-1 blade for mulching, bagging and side discharge. Its fit details include a Bow Tie center hole and replacement numbers such as 742-0741A and CMXGZAM100067.
The named Craftsman models include M100, M105, M110, M115, M140, M210, M230, M250, M260, M270, M310 and M320. Use the exact model number because a similar-looking mower name may not share the same blade.
Its stated dimensions are 21 inches long, 2 1/4 inches wide and 9/64 inch thick. The blade is aimed at buyers who want one replacement for different clipping-handling modes.
Consider it when your manual calls for a listed replacement number and the old blade has the same Bow Tie pattern. Check dimensions as a second fit confirmation.
GICOOL 942-0741A 21 Inch Mower Mulching Blades: Best for keeping a spare blade
- Two-blade pack
- 942-0741A replacement number
- 21-inch deck fit
- Bow Tie center hole
The two-pack shares the listed Craftsman model coverage and fit numbers of the single GICOOL blade. Choose it if you want a spare, and confirm the same mounting pattern.
Pros
- Two blades in one pack
- Names specific Craftsman models
- Supports mulching, bagging and side discharge
Cons
- Requires Bow Tie mounting
- A spare is useful only if it matches your mower
The GICOOL two-pack suits owners who want a second blade on hand after confirming the correct fit. It lists the same broad Craftsman model families and 942-0741A replacement numbers as the single-blade GICOOL option.
Each blade is specified for a 21-inch deck with a Bow Tie center hole. The pack supports mulching, bagging and side-discharge mowing.
The stated dimensions include a 20-30/32-inch length and 2-3/16-inch width. Compare these with your mower’s manual and old blade before choosing the pack.
Choose this if you need two matching replacements and your Craftsman mower falls within the listed fit family. If you only need one blade, the single GICOOL option may be the simpler choice.
Oregon 21 Inch Lawn Mower Blade: Best for Craftsman 5/8-inch center-hole models
- 21-inch blade length
- 5/8-inch center hole
- Craftsman CMXGZAM100129 fit number
- Mulching design
This Oregon blade uses a 5/8-inch center hole and lists CMXGZAM100129 among its replacement numbers. It is a different fit family from Bow Tie blades, so verify your manual.
Pros
- States center-hole and outer-hole measurements
- Names a Craftsman fit number
- Designed for mulching
Cons
- Does not name Craftsman mower models
- Not interchangeable with a Bow Tie mount
This Oregon blade belongs to a different fit family from the Bow Tie 942-0741A options. It uses a 5/8-inch center hole and names Craftsman replacement number CMXGZAM100129.
Its stated fit includes 21-inch decks and a 21-inch blade, with 3/8-inch outer holes and a 1-7/8-inch center-to-center distance. Those measurements make it important to check the manual rather than choose by brand and deck size alone.
Oregon describes this as a mulching blade that cuts and recuts clippings. The listed replacement numbers include several Craftsman and related part numbers.
Choose it only if your Craftsman’s part number and mounting measurements match. If your mower requires a Bow Tie center hole, select one of the compatible options above instead.
Oregon 21 Inch Lawn Mower Blade: Best for Craftsman Bow Tie models
- 21-inch deck and blade length
- Bow Tie center hole
- Lists several Craftsman mower model numbers
- Mulching design
Oregon lists Craftsman and related mower model numbers, including 11A-B0BA897 and 12A-A0BE700. Match the full model number and mounting pattern before choosing it.
Pros
- Names several Craftsman-related model numbers
- Specifies Bow Tie center hole
- Made from alloy steel
Cons
- Does not list the CMXGZAM100067 fit number
- Model number must match your mower
This Oregon blade uses a Bow Tie center hole and lists several Craftsman-related mower model numbers, including 11A-B0BA897 and 12A-A0BE700. It also names Cub Cadet and Troy-Bilt models.
The blade is for a 21-inch deck and has 5/16-inch outer holes with a 2 1/2-inch center-to-center distance. Match those holes and the full mower model number before buying.
Oregon describes it as a mulching blade that recuts clippings. Its fit details differ from the CMXGZAM100067 options, so the shared Craftsman name alone is not enough to confirm compatibility.
Consider it if your model appears in the fit details and the old blade’s pattern matches. If you are also comparing another brand’s 21-inch fit family, see our best Greenworks lawn mower blades 21 inch roundup.
Fismiuta 331737B Mulching Blade: Best for circular center-hole models
- 21-1/16-inch blade length
- Circular center hole
- Lists Craftsman-related replacement numbers
- Mulching blade
This blade uses a circular center mount and lists replacement numbers such as 165833 and 175064. Confirm your existing blade has the same circular pattern and matching part number.
Pros
- States center-hole shape and size
- Lists many replacement numbers
- Designed for mulching
Cons
- Different mount from Bow Tie options
- Does not name specific Craftsman mower models
Fismiuta’s 331737B is the outlier for Craftsman shoppers because it uses a circular center hole, not the Bow Tie pattern used by several 942-0741A options. It lists replacement numbers such as 165833, 175064 and 406712.
The blade measures 21-1/16 inches long, 2 1/4 inches wide and has a 1-7/8-inch circular center opening. Fismiuta advises confirming that the old blade has the same circular mount.
This is a mulching blade. Its replacement numbers overlap with the Oregon 5/8-inch-center-hole option, but the listed center-hole measurements differ, so verify the actual mounting fit.
Choose it only when the mower manual and old blade confirm the circular center pattern and a matching replacement number. Do not substitute it for a Bow Tie blade based on length alone.
How do you check Craftsman blade compatibility?
Check the mower’s full model number, the replacement part number and the blade’s center-hole pattern. A 21-inch cutting deck does not tell you which mounting hole or outer-hole layout your mower needs.
Look for the model label on the mower and check the manual for the blade part number. If you compare the old blade, note its length, center opening and any outer mounting holes.
Some 942-0741A family blades here list Craftsman models and a Bow Tie center hole. The Oregon CMXGZAM100129 option uses a 5/8-inch center hole, while the Fismiuta 331737B uses a circular hole.
Does a 21-inch Craftsman mower need a 21-inch blade?
Not always; deck width alone is not enough to identify the correct blade. Use the replacement number and mounting pattern specified for the mower model.
The picks here include blades described for a 21-inch deck, but their lengths and hole patterns differ. Follow the mower manual when measurements or product fit details appear inconsistent.
A blade that matches the old one in length can still have the wrong center hole. Check both before installation.
Should you choose a mulching or 3-in-1 blade?
Choose a mulching blade when you want clippings cut and returned beneath the deck. A 3-in-1 blade adds bagging and side-discharge modes when the mower and setup support them.
Several picks here describe mulching, bagging and side discharge. Oregon’s options are described as mulching blades, while Maxpower’s is a universal metal mulching blade.
The right mode depends on how you handle clippings, but it does not change fit requirements. Confirm the replacement number and mounting pattern first.
When should you sharpen or replace a blade?
Sharpen a blade that remains straight and intact, and replace one that is damaged or no longer suitable for a clean cut. Check the mower manual for maintenance steps and safe handling.
For maintenance timing, see How Often Should You Sharpen Lawn Mower Blades?. Our How to Sharpen Lawn Mower Blades? guide covers the sharpening process.
Which Craftsman 21-inch blade should you choose?
Choose Grasscool if your mower is one of its named Craftsman models and the 942-0741A fit and Bow Tie pattern match. Pick Maxpower if your manual confirms a compatible mounting size for its washer set.
For other Craftsman mowers, use the manual’s part number to compare the 5/8-inch Oregon, Bow Tie Oregon or circular Fismiuta option. The best Craftsman lawn mower blades 21 inch are the ones that match your exact mower and original mounting pattern.
Our top 3 picks at a glance
-
1
Best for broad Craftsman model coverage
Grasscool 21 inch Mower Mulching Blade
9.7/10 our score
See it on Amazon -
2
Best for adaptable mounting options
Maxpower 331981B 21-Inch Universal Gold Metal Mulching
9.6/10 our score
See it on Amazon -
3
Best for a confirmed Bow Tie spindle
Chway 1Pcs 942-0741a Lawn Mower Blade
9.5/10 our score
See it on Amazon
Frequently asked questions
How do I find the right Craftsman 21-inch mower blade?
Check the mower model number and the part number on the old blade or in the manual. Then compare blade length, center-hole shape and any outer mounting holes with the replacement.
A 21-inch deck alone does not confirm that a blade fits.
Are all 21-inch Craftsman mower blades interchangeable?
No. Craftsman 21-inch mowers can use different blade families, including Bow Tie center holes and circular or round mounts.
Match the mower model and replacement part number, then compare the full hole pattern.
Do not choose by blade length alone.
What does 942-0741A mean on a mower blade?
942-0741A is a replacement part number used by several blades listed for select 21-inch walk-behind mowers. Some options also name Craftsman models and related numbers such as 742-0741A or CMXGZAM100067.
Use your mower manual or old blade to confirm the correct number.
Can I use a universal blade on a Craftsman mower?
A universal blade may fit if its length, mounting hole and included reducing washers match the mower's requirements. The Maxpower option here includes several reducing washer sizes for 21-inch cut mowers.
Confirm compatibility with your exact Craftsman model before installing it.
Should I sharpen or replace a Craftsman mower blade?
Sharpen a blade that remains straight, intact and suitable for your mower. Replace one with damage or one that cannot be restored to a clean cutting edge.
For maintenance timing, see how often to sharpen lawn mower blades and our blade sharpening guide.
