Best Iron Lawn Mower Blades of 2026

Name: Maxpower 331528B Mulching Blade for 21 Inch Cut MTD/Cub Cadet/Troy-Bilt
Brand: Maxpower

Bryan Hicks

Last Updated: Jan 31, 2026

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Iron lawn mower blades are a popular choice when it comes to cutting grass. They are made of high-quality iron which makes them durable and long-lasting. These blades are also known for their sharpness, which ensures a clean and precise cut. Iron blades are suitable for all types of lawnmowers and can handle tough terrains with ease. They are easy to install and maintain, making them a favorite among homeowners and landscapers alike. With iron lawn mower blades, you can ensure a well-groomed lawn that looks neat and tidy.

At a Glance: Our Top Picks

#TOP 1

Maxpower 331528B Mulching Blade for 21 Inch Cut MTD/Cub Cadet/Troy-Bilt

9.8

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#TOP 2

Grasscool 942-04308 6 Star Hole Mower Blades

9.7

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#TOP 3

MaxPower 561739B 2-Blade Set for 46" Cut Mowers

9.5

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Top 10 Iron Lawn Mower Blades

#TOP 1

Maxpower 331528B Mulching Blade for 21 Inch Cut MTD/Cub Cadet/Troy-Bilt

Maxpower
331528B
black
21-Inch

Maxpower 331528B Mulching Blade for some 21 Inch Cut MTD/Cub Cadet/Troy-Bilt Replaces 742-0741, 942-0741, CMXGZAM100067

The Maxpower 331528B Mulching Blade is designed as a replacement for OEM numbers 742-04100, 742-0741, 742-0741A, 942-0741, and 942-0741A. It is compatible with many 21” cut MTD, Cub Cadet, Troy-Bilt, and Craftsman mowers, including the Craftsman CMXGZAM100067. The blade measures 21" in length and 2-1/4" in width with a bow tie center hole design. The blade is manufactured to meet or exceed all OEM specifications and is proudly made in the USA. It is recommended to check your owner's manual to ensure the OEM number of the blade being replaced matches one of the OEM numbers provided for this item.

9.8

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What We Like

Perfect fit compatibility
Sharp and durable blade
Easy installation process
Excellent mulching performance
Affordable price point

#TOP 2

Grasscool 942-04308 6 Star Hole Mower Blades

Grasscool
942-04308
Black

Grasscool 942-04308 Blades with 6 Star Hole for Troy Bilt Bronco Pony Mustang 42 inch Mower Cub Cadet XT1-42 ZT1-42 42'' Zero Turn Lawn Tractor Replace 942-04308A 942-04312 High Lift

The Grasscool Star Hole Blades are designed to fit specific lawn mower models like Cub Cadet, Troy-Bilt, and Craftsman. Before buying, you should check your current blade's center hole shape to ensure you get the right fit—these blades have a 6-point star hole, which helps you avoid ordering the wrong type. This makes replacement easier and more accurate for you. These blades are compatible with a wide range of mower models, so you can trust they’ll work well with your equipment. With these blades, you get a reliable and precise fit that keeps your mower running smoothly and efficiently.

9.7

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What We Like

Good cutting performance
Durable build quality
Easy installation
Affordable price
Excellent fit for mower

#TOP 3

MaxPower 561739B 2-Blade Set for 46" Cut Mowers

Maxpower
561739B
Black

MaxPower 561739B 2 Blade Set for 46" Cut Craftsman, Husqvarna, Poulan Replaces OEM no. 405380, 594892801, 532405380, CMXGZAM110147

The MaxPower 561739B 2-Blade Set includes two blades for various 46-inch cut Craftsman, Husqvarna, and Poulan mowers, fitting OEM #'s 405380, 532-405380, PP21011. Each blade measures 23 inches long and 2-3/4 inches wide with a 5-point star center hole. It is manufactured to exceed OEM specifications and proudly made in the USA. Make sure to check the owner’s manual to ensure that the OEM number of the blade being replaced matches one of the OEM numbers provided for this item.

9.5

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What We Like

Perfect OEM fit
Easy installation
Durable, heavy-duty steel
Sharp, clean cutting
Made in USA

#TOP 4

Grasscool 138971 5-Star Mower Blades for Craftsman 42" Deck

Grasscool
532138971 138498 138971 532138498
Black

Grasscool 138971 Blades with 5-Star Mounting Pattern for Craftsman 42 inch Mower LT1000 LT2000 T110 YT3000 42'' Deck Cut Zero Turn Riding Repalce 532138971

The Grasscool 5-Star Mower Blades are designed for Craftsman 42-inch deck riding mowers, including popular models like LT1000 and T110. Before buying, you can easily check your current blade’s center hole to ensure you get the right fit, which saves you time and hassle. These blades feature a unique 5-point star center hole, allowing for a secure and proper fit on compatible mowers. They also work well with Poulan Pro and Husqvarna models, giving you versatile options. With these blades, you get reliable performance and convenience, making your lawn mowing tasks smoother and more efficient.

9.4

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What We Like

Perfect fit for many models
High quality and balanced
Excellent value for price
Improved cutting performance
Painted to resist rust

#TOP 5

Grasscool 422719 134149 Mulching Blades

Grasscool
134149 422719 777134149 424752 532134149
Black

Grasscool 422719 134149 Mulching Blades with 5-Star Mounting Pattern for Craftsman LT1000 LT2000 42 inch Deck Riding Lawn Mower Tractor Replace 532134149 424752 138971

Features

Mower Blades With 5-Star Mounting Pattern Replace Number Craftsman 422719 134149 532134149 424752 138971
Stop The Guesswork! Craftsman 42" Deck Riding Lawn Mower (LT1000 LT2000,and Etc) Uses Two Different Blade Mounting Pattern.Before Ordering Our Blades,identify Your Original Blade's Mounting Pattern.Our Blade's Mounting Pattern Is 5 Point Star Hole.If Your Blade's Mounting Pattern Is 6 Point Star Hole,Use MPN 942-0616A 942-04308 To Order Your Correct Blades Elsewhere
Mower Blades With 5-Star Mounting Pattern Compatible With Craftsman 42 Inch Deck Riding Mower Lawn Tractor Model:LT1000 LT2000,and Etc.

9.2

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#TOP 6

MaxPower 2-Blade Set for 42" Cut Poulan/Husqvarna/Craftsman

Maxpower
561713B
Black

MaxPower 561713B 2-Blade Set for 42" Cut Poulan/Husqvarna/Craftsman Replaces 138498, 138971, 127843, 532138971, 532127843, 532138498, CMXGZAM110136

The MaxPower 561713B 2-Blade Set is designed to replace the OEM numbers of 42-inch cut Poulan, Husqvarna, and Craftsman mowers. The set includes two blades with 21-inch L x 2-1/4-inch W measurements and a 5-point star center hole. They are manufactured to meet or exceed all OEM specifications and come with a black finish. As a bonus, the product is proudly made in the USA. Before purchasing, be sure to verify the OEM number of the blade that needs to be replaced.

9.2

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What We Like

Excellent cutting performance
Easy installation process
Durable and long-lasting
Compatible with multiple models
Good airflow design

#TOP 7

MTD Genuine Parts Replacement Part Mulching Blade-21-Inch Cutting Decks Fits Various MTD

MTD Genuine Parts
(942-0741A)
Black
1 Pack

MTD Genuine Parts (942-0741A) Replacement Part Mulching Blade-21-Inch Cutting Decks Fits Various MTD, CRAFTSMAN, Troy-Bilt, and Other Top Models

Features

COMPATIBILITY: Compatible With Yard Man, Yard Machines, Troy-Bilt, Huskee, Bolens And Craftsman Units Built In 1995 And After; They Will Also Fit Select Murray And Snapper Units Built In 2012 An After
21 INCH MULCHING BLADES: Engineered To Perfectly Fit 21-Inch Lawn Mowers Manufactured From 2012 On, Ensuring Precise Cutting Performance By Effectively Mulching Grass Clippings Into Fine Particles
REPLACEMENTS: These Lawn Mower Blades Can Be Used As A Direct Replacement For Cub Cadet Models Including, But Not Limited To: CC469, CC989, CC997ES, PR521, S621, S621SS, SC621, SC621E, SR621, SRC621

9.0

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#TOP 8

MaxPower 561714B 2 Blade Mulching Set

Maxpower
561714B
Black

MaxPower 561714B 2 Blade Mulching Set for 42" Cut Craftsman, Husqvarna, Poulan Mowers Replaces OEM #'s 134149, 594892701 and 532134149

Upgrade your lawn mower with the MaxPower Mulching Set. This set includes 2 blades specifically designed for a 42" cut. With its 5 Point Star Center Hole, it is compatible with Craftsman, Husqvarna, and Poulan mowers, replacing OEM numbers 134149 and 532134149. Measuring 21" long by 2-1/4" wide, these blades are manufactured to meet or exceed all OEM specifications. The MaxPower Mulching Set ensures a precise and efficient cut, allowing you to mulch your grass with ease. Say goodbye to manual raking and bagging, as this set helps to finely chop the grass clippings into small pieces, which are then returned to the soil as natural fertilizer. Keep your lawn healthy and beautiful with the MaxPower Mulching Set.

8.9

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What We Like

Easy installation
Durable and resistant to damage
Excellent cutting performance
Cost-effective compared to brand name

#TOP 9

Grasscool 942-04308-X 942-04308 Mulching Blades

Grasscool
942-04308-X

Grasscool 942-04308-X 942-04308 Mulching Blades with 6-Star Mounting Pattern for Cub Cadet 42 inch Deck Mower Troy Bilt Pony Bronco 42'' Zero Turn Lawn Tractor

Features

Mulching Blades Replace MPN 942-04308-X, 942-04308 ,942-04126, 742-04126, 942-04126-x, Windsor 51-4440，942-04308-X, MTD 942-04308-X, Troy Bilt 942-04308-X.
Blades Mounting Pattern Compatibility Notice: CUB CADET ZT1-42 XT1-42 XT2-42 RZT42 Mower Uses Two Different Mounting Pattern. Our Blades Have A 6-Point Star Mounting Pattern.They Will NOT Fit Mounting Pattern With An “S” Shaped (MPN 742P05177 742-05177). Please Check Your Original Blade's Mounting Pattern Before Ordering A Replacement!
TOOTHED 3-IN-1 BLADE: Serves 3 Purposes (mulching, Bagging, And Side Discharging) At The Same Time. The Curved Toothed Design Provides A Better Mulching Experience, Ideal For Mowing Overgrown Grass And Its High-Lift Increases The Bagging Capacity By 50%.

8.7

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#TOP 10

Grasscool 942-0616A Mulching Blades with 6 Star Mounting Pattern

Grasscool
742-0616 742-0616A 7420616 942-0616
Black

Grasscool 942-0616A Mulching Blades with 6 Star Mounting Pattern for Cub Cadet 42 inch Zero Turn Lawn Tractor MTD Troy Bilt Bronco Pony 42" Deck Mower Replace 742-0616A 742-0616 942-0616

Features

Blade Compatibility Notice:Craftsman 42" Deck Mower Uses Two Different Mounting Pattern. Our Blades Have A 6-Point Star Mounting Pattern. They Will NOT Fit Mounting Pattern With An “5-Point Star” (MPN 138971). Please Check Your Original Blade's Mounting Pattern Before Ordering A Replacement!
Blade Compatibility Notice: Cub Cadet 42 Inch Zero Turn Models (ZT1-42 XT1-42 XT2-42 RZT42 LT1042) Were Manufactured With Four Different Blade Specifications:Type 1: Part # 942-0616A（with 6 Star Hole)-OUR BLADES;Type 2: Part # 742-05177 742P05177（with S-Hole)-ORDER IT ELSEWHERE;Type 3: Part # 759-3830 742-04101 (with Circle-Hole)-ORDER IT ELSEWHERE;Type 4: Part # 138971 (with 5 Star Hole)-ORDER IT ELSEWHERE.Please Confirm The Part Number From Your Original Blade Before Purchasing A Replacement.
NOTICE: The Cutting Edges Are Painted To Prevent Rust And Protect Your Hands During Installation. The Paint Will Wear Off As You Mow The Grass.

8.6

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Frequently Asked Questions (FAQs)

1. What grade of steel are lawn mower blades?

USA Mower Blades are made of carbon steel with a hardness of 38-42 Rockwell. These blades are made of local steel that under goes a salt bath heat treatment to eliminate the need for straightening.

2. Are old lawn mower blades good for making knives?

Mower blades are made from different metals. Depending on the metal, some don't even have the ability to harden, while others do. If the steel you use cannot harden, it cannot make a suitable knife.

3. How do I know what blades to buy for my lawn mower?

The easiest way to find replacement lawn mower blades is with the OEM number. The OEM number is the numerical part number of the blade assigned by the manufacturer. In most cases, just typing this number with the manufacturer name into a search engine or online store will be enough to bring up some promising results.

Editor's Notes

During our iron lawn mower blade research, we found 24 iron lawn mower blade products and shortlisted 10 quality products. We collected and analyzed 150,412 customer reviews through our big data system to write the iron lawn mower blades list. We found that most customers choose iron lawn mower blades with an average price of $24.63.

The iron lawn mower blades are available for purchase. We have researched hundreds of brands and picked the top brands of iron lawn mower blades, including Maxpower, Grasscool, MTD Genuine Parts. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by

Bryan Hicks

Bryan Hicks is a professional gardener and a writer who lives in North Texas with his family and his dog. Bryan has spent more than half of his life surrounded by garden products. He has extensive experience in garden makeovers and maintenance and lawn care. His areas of expertise include outdoor decoration, gardening and garden design.