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There is nothing more frustrating than a loose blade that rattles violently against the deck during a mow. That constant vibration doesn’t just annoy you; it can strip spindle threads and damage your mower’s internal components over time. Ensuring you have the correct push mower blade bolt is the simplest way to prevent these mechanical headaches. Many homeowners struggle with seized hardware or mismatched thread sizes, leading to costly repairs that were easily avoidable with the right fastener. A secure fit keeps your cutting deck balanced, reduces engine strain, and protects the spindle mount from excessive wear. You want a bolt that grips firmly without stripping the holes in your blade or deck. Based on product specifications and user feedback, the options below offer reliable solutions for common mower brands. Choosing the correct thread pitch and length is critical for safety. If you are unsure about the direction the bolt turns, check our guide on blade bolt thread direction before starting work. This ensures you don’t strip the threads while trying to tighten the hardware.

Replacement bolts come in various grades and finishes, each serving a specific purpose in lawn maintenance. Standard grade 8 bolts offer the strength needed to hold a spinning blade at high RPMs without stretching. Some options include integrated washers that distribute load evenly and prevent surface damage to the blade. This design helps maintain consistent airflow under the deck, which is essential for clean cuts and efficient bagging. Whether you are maintaining a push mower or a riding tractor, the correct hardware ensures your blade stays centered. A wobbly blade can tear grass rather than cut it, leading to brown tips and an uneven lawn. By selecting a bolt that matches your OEM part number, you avoid compatibility issues. These fasteners are designed to resist corrosion, which is vital for outdoor equipment exposed to moisture and dirt. Investing in quality hardware extends the life of your mower and keeps your yard looking professional. It is a small part that makes a big difference in overall performance and safety. Always replace bolts when you install new blades to ensure a fresh, secure connection every season.

1
Best Seller

Tormurbutl 2-Pack Blade Bolt 3/8-24 x 1-3/8

Tormurbutl
9.8 /10
POW Score
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This 2-pack of blade bolts from Tormurbutl is a practical, budget-friendly replacement for many popular gas mowers, including Husqvarna, Craftsman, and Poulan models. It's a simple, essential part for securing your mower blade, ideal for homeowners or DIYers doing routine blade swaps.
Pros & Cons

Pros

  • Affordable price for a 2-pack, offering great value for budget-conscious homeowners.
  • Exact replacement for OEM part numbers 532851084, 851084, and 532435345, ensuring a proper fit.
  • Simple installation with common hand tools, perfect for first-time mower owners.
  • Compact size makes it easy to store in a toolbox or mower shed.

Cons

  • Only includes the bolt, not a washer or lock washer, which may be needed for some mower models.
  • Fitment may vary; always double-check your mower's bolt size before purchasing.
  • Black finish may wear over time with repeated use, though it does not affect function.
Detailed Review

If you own a gas-powered lawn mower from Husqvarna, Craftsman, Poulan, or similar brands, you know that keeping the blade securely attached is essential for safe and effective cutting. The Tormurbutl 2-Pack Blade Bolt is a simple yet critical replacement part designed to do just that. This bolt is a direct replacement for OEM part numbers 532851084, 851084, and 532435345, making it a reliable choice for many popular mower models.

This product is best suited for homeowners who perform their own routine maintenance, whether you're a first-time mower owner or a seasoned lawn care enthusiast. It's particularly useful for those with suburban lawns or rural properties who need to swap blades after hitting rocks, roots, or just at the start of the mowing season. The bolt is also a smart buy for budget-conscious shoppers who want to keep their mower running without spending a lot on parts.

In terms of performance, this blade bolt does exactly what it should: it secures your mower blade firmly to the crankshaft. The 3/8-24 thread size and 1-3/8 inch length are standard for many walk-behind mowers, and the black finish offers basic corrosion resistance. While it's not a fancy upgrade, it's a dependable piece of hardware that gets the job done. Many users appreciate having a spare on hand, as losing or damaging a bolt can sideline your mower mid-job.

Build quality is straightforward but adequate. The bolt is made from metal with a black coating that helps resist rust, though it may show wear over time. It's a simple, no-frills part that doesn't require special tools for installation. Just use a wrench or socket to tighten it to the manufacturer's recommended torque. The 2-pack is a nice bonus, giving you a backup for future blade changes.

One limitation to note is that the pack does not include a washer or lock washer. Some mower models use a washer between the bolt head and the blade, so you may need to reuse your existing one or purchase it separately. Also, while the bolt is compatible with many brands, it's always a good idea to verify your specific mower's bolt size before ordering. The product description lists compatibility with Craftsman, Husqvarna, Poulan Pro, Poulan, Weed Eater, Roper, Sears, Rally, EHP (Electrolux Home Products), and Yard Pro, but it's wise to double-check.

Overall, the Tormurbutl 2-Pack Blade Bolt is a practical, affordable solution for anyone needing to replace a lost or worn blade bolt. It's a small but essential part of lawn mower maintenance, and having a spare means you're less likely to face a frustrating delay during mowing season. For homeowners who prefer to handle their own repairs, this is a solid choice that won't break the bank.

2
Editor's Pick

Blade Bolt 532851084 for Husqvarna, Craftsman

Lakeyulystore
9.8 /10
POW Score
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This 2-pack of Grade 8 blade bolts is a practical spare part for homeowners and DIYers who need a secure replacement for Husqvarna, Craftsman, Poulan, or Weed Eater mowers. It's a simple, budget-friendly way to keep your blade mounted solidly during routine mowing and seasonal maintenance.
Pros & Cons

Pros

  • Grade 8 construction provides reliable strength for heavy-duty cutting and reduced risk of shearing.
  • Exact replacement for common OEM part numbers, making purchasing straightforward for popular mower brands.
  • Affordable 2-pack value gives you a backup bolt for emergencies or future blade changes.
  • Thread size 3/8-24 x 1-3/8 is a standard fit for many walk-behind and riding mower blade assemblies.

Cons

  • Compatibility depends on your specific mower model, so verify the thread size and length before purchasing.
  • Includes only the bolt; you'll need a torque wrench and safety equipment for proper installation.
  • Some users may prefer a single bolt with a locking patch or washer for added vibration resistance.
Detailed Review

If you own a lawn mower, you know the blade bolt is a small but critical part that holds everything together. This Blade Bolt 532851084 2-pack from Lakeyulystore is a replacement fastener designed for Husqvarna, Craftsman, Poulan, and Weed Eater mowers. It matches OEM part numbers 532851084, 851084, and 532435345, which makes it a practical spare for anyone who does their own blade maintenance.

This bolt is best suited for homeowners, suburban lawn owners, and first-time mower buyers who want an affordable way to keep their equipment running safely. It's also handy for rural property owners and lawn care enthusiasts who prefer to replace blades during the season. Because it comes as a 2-pack, you can keep one in the toolbox and one on the mower, which is useful when you hit a rock or stump on a Saturday morning.

In terms of performance, the Grade 8 rating means this bolt is built to handle the torque and vibration from gas and electric mowers. The 3/8-24 thread and 1-3/8 inch length are common dimensions for many walk-behind and riding mower blade assemblies. When you install the blade properly with the correct torque, it should hold the blade securely during normal cutting, mulching, and bagging. The bolt's black finish also offers some corrosion resistance for humid garages or damp storage areas.

Build quality is straightforward for a fastener. There are no moving parts or complex features, but the material grade is reassuring. The design is a direct fit, so it should thread in without spacers or adapters. You'll want to use a torque wrench to tighten it to your mower manufacturer's recommended setting, which prevents over-tightening or under-tightening. Standard sockets and wrenches are all that's needed for installation.

One realistic limitation is compatibility. While this bolt fits many popular brands, not every Husqvarna, Craftsman, Poulan, or Weed Eater model uses this exact size. You should check your owner's manual or measure the old bolt before ordering. Also, the bolt alone doesn't include a locking washer or adhesive patch, so using a thread lock compound may improve reliability on high-vibration mowers.

For budget-conscious shoppers, this 2-pack is a low-risk way to handle blade replacements or secure a new blade after sharpening. It's a practical addition to your maintenance kit, especially before mowing season starts or before tackling thick fall leaves. If you're comfortable using basic hand tools, this blade bolt offers dependable value and peace of mind for keeping your mower ready to cut.

Compatibility

This blade bolt is designed as a direct replacement for OEM part numbers 532851084, 851084, and 532435345. It fits many Husqvarna, Craftsman, Poulan, and Weed Eater lawn mowers, including walk-behind push mowers, self-propelled mowers, and some riding models. However, you should always confirm your mower's blade bolt size before ordering. The thread size is 3/8-24 and the length is 1-3/8 inches. If your existing bolt matches these dimensions, this replacement will likely work. For safety, check the owner's manual or remove the current bolt and compare it to the new one.

Installation Guide

Installing this blade bolt is simple with standard tools. First, ensure the mower is off, the spark plug wire is disconnected, and the blade is properly secured. Use a socket wrench to remove the old bolt, taking note of how the blade and any washers are oriented. Place the new blade bolt through the blade and spacer if your mower uses one. Tighten the bolt to the torque specification listed in your owner's manual, usually around 50 to 70 ft-lbs depending on the model. Avoid using an impact wrench unless you know the proper torque. Always test that the blade spins freely after installation.

3
Limited Time

SURPOUF 532193003 Blade Bolt and Washer 3-Pack

SURPOUF
9.8 /10
POW Score
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These replacement blade bolts and washers are a practical, budget-friendly fix for securing your mower blade tightly. Made from corrosion-resistant materials with a simple 3/8-inch size, they fit many Craftsman, Poulan, and Husqvarna mowers, making them a smart spare for any homeowner.
Pros & Cons

Pros

  • Compatible with the specific Craftsman, Poulan, and Husqvarna models listed in the product description, offering a direct OEM-style replacement.
  • Sturdy build with corrosion resistance and wear resistance, so it can hold up to wet grass, mud, and outdoor storage.
  • Three-pack provides good value and ensures you always have a spare on hand when a blade bolt strips or rusts.
  • Straightforward replacement part for a common maintenance task, with no special tools or expertise needed.

Cons

  • Not universal: only fits the models on the compatibility list, so you must verify your mower's model number before ordering.
  • Only includes bolts and washers, not the blade itself or any other mounting hardware, so you'll need to reuse or buy the blade separately.
  • Small parts are easy to misplace if you don't store them in a labeled container or zip-top bag.
Detailed Review

This is a set of replacement blade bolts and washers designed for specific Craftsman, Poulan, and Husqvarna lawn mowers. It is not a mower itself, but an important hardware component that secures the cutting blade to the crankshaft. The kit includes three sets of 3/8-inch bolts and washers, matching OEM part numbers 532193003 and 532174365.

This product is best suited for homeowners and DIYers who own one of the compatible model numbers, such as the 2042 LS, 2146 XLS, or 2246 LS. It is also a smart pick for budget-conscious shoppers who prefer to handle their own mower maintenance rather than paying for shop labor. Rural property owners with larger lawns may find it handy to keep a spare set around for quick roadside or shed repairs.

In real-world use, the blade bolt and washer assembly keeps the mower blade attached even during tough cutting conditions like thick grass or light brush. The washer spreads the clamping force, which helps prevent damage to the blade and the mounting surface. Good corrosion resistance is a plus for anyone who mows in damp conditions or stores the mower in an unheated shed, where moisture can cause rust.

Build quality looks solid based on the product description. The metal is described as having excellent corrosion resistance, wear resistance, and tear resistance, which is exactly what you need for a part that lives under the deck and gets exposed to grass, dirt, and moisture. The included washers help ensure a tight fit and reduce the chance of the blade working loose over time.

Maintenance is straightforward. You will need a socket wrench and the correct size socket to loosen the old bolt and torque the new one to spec. When replacing your mower blade, installing a fresh bolt and washer is a good habit because it keeps the mounting connection strong. This three-pack gives you enough hardware for multiple blade changes, so you won't have to reorder every time you sharpen or swap blades.

One limitation is that the bolt only fits the specific models listed in the compatibility guide. Check your mower's model number before you buy. Also, this kit only contains the bolt and washer, not the blade itself. But for the convenience of having spares and the peace of mind that comes with a secure blade mount, this replacement kit is a practical addition to any lawn care toolbox.

Compatibility Guide

This replacement blade bolt and washer fits a wide range of Craftsman, Poulan, and Husqvarna riding mowers and lawn tractors. Before ordering, confirm your mower's model number against the list provided by the manufacturer.

Compatible models include 2042 LS, 2146 XLS, 2246 LS, 2346 XLS, 2348 LS, and 2354 GXLS, among others. Check the full compatibility list in the product description on Amazon to verify your specific unit.

If you are unsure, remove the existing bolt and compare it with these dimensions: 3/8-inch thread size and a washer that matches the original 532193003 part.

Installation Tips

Before starting, make sure the mower is off, the spark plug wire is disconnected, and the engine is cool. Tip the mower on its side with the carburetor facing up to avoid oil leaks.

Use a socket wrench to loosen the old blade bolt. Hold the blade steady with a block of wood if needed. Once the old hardware is removed, clean the mounting area and place the new washer and bolt through the new blade.

Torque the bolt to the manufacturer's specification, typically around 45 to 75 foot-pounds for mower blades. If you do not have a torque wrench, tighten it snugly and then give it a firm pull for a secure hold.

4
Top Rated

Sporthfish 532193003 Blade Bolt Washer Compatible

Sporthfish
9.8 /10
POW Score
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This is a set of three blade bolt washers designed to secure lawn mower blades on a wide range of riding and zero-turn mowers from Husqvarna, Craftsman, AYP, and others. With an upgraded arc top design that prevents thread wear and part loss, these bolts offer a solid, reliable hold at a fraction of the OEM cost, making them a smart replacement for homeowners and DIYers maintaining their mower decks.
Pros & Cons

Pros

  • Exact fit for a wide range of popular mower brands, confirmed by user reviews on Husqvarna and Craftsman models.
  • Heavy-duty steel construction with an integrated washer design that prevents loosening and thread damage over time.
  • Excellent value compared to OEM parts, with many users reporting they work just as well as the originals.
  • Simple to install, no special tools required, and the three-pack covers an entire mower deck.

Cons

  • Not compatible with older Craftsman 22-inch walk-behind mowers, as noted by one reviewer, so always verify fitment before purchasing.
  • The bolt head edges can round off over time if not checked periodically, especially on mowers with heavy use or vibration.
  • Some users may prefer a separate washer design for easier replacement, but the integrated washer is a deliberate upgrade for reliability.
Detailed Review

The Sporthfish 532193003 Blade Bolt Washer set is a practical replacement part for anyone maintaining a riding or zero-turn lawn mower. These bolts are designed to secure the blade to the spindle under the deck, and they come as a three-pack so you can replace all the fasteners on a typical mower at once. The upgraded arc top integrated washer is a nice touch, it helps prevent the washer from separating and getting lost, and it reduces thread wear over time.

This set is best suited for homeowners, DIYers, and small engine hobbyists who own compatible mowers from Husqvarna, Craftsman, AYP, Poulan, Weed Eater, or Sears. If you are already comfortable changing blades, swapping these bolts is a straightforward job with basic hand tools. The bolts are made from quality steel and feel solid in hand, they are not flimsy or prone to stripping during installation.

In real-world use, these bolts hold blades securely even on rough terrain. Several reviewers mention they are an exact fit for their mowers, including Husqvarna YTH23V48 and various zero-turn models, and they report no issues with loosening or vibration after installation. The black finish resists rust well, which matters when you are working under the deck where moisture and grass clippings accumulate.

One limitation to note: these bolts do not fit older Craftsman 22-inch walk-behind mowers, so double-check your mower model or OEM part number before ordering. Also, like any blade bolt, the head edges can become rounded over years of use, so it is wise to inspect them every few seasons and replace if needed. That is standard maintenance advice, not a flaw specific to this set.

Overall, the Sporthfish blade bolt washer set delivers reliable performance at a great price. If you need to replace stripped or worn bolts on a compatible mower, this three-pack is a smart buy. It saves you money compared to OEM parts, and the integrated washer design is a genuine improvement over older flat washer styles. For DIY mower maintenance, these bolts are a solid choice.

Specifications

Product Name: Sporthfish 532193003 Blade Bolt Washer Set

Quantity: 3 bolts with integrated washers

Bolt Size: 1-1/4 inch x 7/16 inch - 20 thread

Material: Quality steel with black finish

Compatible OEM Part Numbers: 532193003, 532193003-A, 14457, 174365, 193003, 193003-A, 532-1930-03, 532174365, 539107522

Brand Compatibility: Husqvarna, Craftsman, AYP, Poulan, Poulan PRO, Weed Eater, Roper, Sears, and others

Product Dimensions: 1.5 x 1.4 x 1.4 inches

Item Weight: 9.6 ounces

Best Use Cases

These blade bolts are ideal for routine mower deck maintenance. Replace them whenever you swap out blades or notice wear on the bolt head edges. They work great on zero-turn mowers and riding mowers with three-blade decks, giving you a complete set of fasteners in one pack.

For DIY homeowners, this set is a cost-effective way to keep your mower safe and efficient without a trip to the dealer. The integrated washer design also makes installation faster, since you do not have to fumble with a separate washer.

If you own a Husqvarna, Craftsman, or AYP mower from the long list of compatible models, these bolts are a direct replacement. They are also handy to keep as spares in your workshop, especially if you maintain multiple mowers.

5

Craftsman 532851084 Blade Bolt

Craftsman
9.7 /10
POW Score
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This Craftsman 532851084 blade bolt is a genuine OEM replacement part designed to secure mower blades on many popular lawn tractor and push mower decks. It's a simple, durable hex head screw that ensures a safe and reliable attachment, ideal for homeowners and DIYers performing routine blade maintenance on Craftsman, Husqvarna, Poulan, and other compatible mowers.
Pros & Cons

Pros

  • Genuine OEM part from American Yard Products ensures compatibility and quality.
  • Simple design makes installation quick and easy with common hand tools.
  • Durable steel construction holds up well under normal mowing conditions.
  • Affordable price point for a critical mower deck fastener.

Cons

  • Only includes the bolt; may need to purchase additional washers or lock washers separately.
  • Limited to specific thread size and length, so not universal for all mower models.
  • Some users may find the bolt slightly short for certain deck configurations.
Detailed Review

The Craftsman 532851084 Blade Bolt is a genuine OEM replacement part manufactured by American Yard Products, a company that supplies parts for many of the biggest names in lawn care equipment. This bolt is specifically designed to secure the mower blade to the deck spindle on a wide range of lawn tractors, zero-turn mowers, and push mowers. It replaces part numbers 851084 and 532435345, making it a direct fit for many Craftsman, Husqvarna, Poulan Pro, Poulan, Weed Eater, Roper, Sears, Rally, and Yard Pro models.

This blade bolt is best suited for homeowners and DIY enthusiasts who perform their own mower maintenance. Whether you are a suburban lawn owner with a riding mower or a first-time buyer looking to replace a worn or damaged blade, this bolt offers a straightforward solution. It is also a great choice for budget-conscious shoppers who want to avoid the cost of a dealer visit for a simple part.

In terms of performance, the bolt does exactly what it is supposed to do: it holds the blade securely in place. The hex head design allows for easy tightening with a socket or wrench, and the 3/8-24 thread size provides a strong, vibration-resistant connection. Many users appreciate that it is a genuine OEM part, which often means better fit and finish compared to generic alternatives. The steel construction is durable enough to handle the forces of mowing, including occasional impacts with rocks or roots.

Build quality is solid for a fastener of this type. The bolt is made from steel and has a standard hex head that resists stripping when properly torqued. It is not coated for rust resistance, so keeping it clean and dry after use can help extend its life. The bolt is lightweight and compact, making it easy to store in a toolbox or garage drawer.

Installation is straightforward for anyone comfortable with basic tools. Simply remove the old bolt, place the blade on the spindle, and tighten the new bolt to the manufacturer's recommended torque. No special skills or advanced tools are required. However, you may need to purchase a lock washer or thread-locking compound separately to ensure the bolt stays tight during operation.

One realistic limitation is that this bolt is not universal. It is designed for specific thread sizes and lengths, so you must verify compatibility with your mower model before purchasing. Additionally, some users may find that the bolt is slightly short for certain deck configurations, though this is rare. Overall, the Craftsman 532851084 Blade Bolt is a reliable and affordable choice for anyone needing to replace a mower blade fastener. It is a practical, no-frills part that gets the job done and helps keep your lawn mower running safely and efficiently.

Common Questions About Mower Blade Bolts

What size bolt fits most push mowers?

Most standard push mowers use a 3/8-24 thread size. This is a common specification found on brands like Husqvarna and Craftsman. Always verify your specific model number before purchasing to ensure a perfect fit. Using the wrong size can damage the spindle mount.

Do I need a washer with the bolt?

Many modern bolts come with an integrated washer design. This helps distribute the load and prevents the bolt from digging into the blade. It also protects the deck surface from scratches. If your bolt does not have one, use a standard flat washer.

How often should I replace the blade bolt?

Replace the bolt whenever you install a new blade. Old bolts can stretch or corrode over time, reducing their clamping force. This ensures your blade stays secure during high-speed operation. It is a cheap insurance policy for your mower’s safety and longevity.

Can I use any grade 8 bolt?

Not necessarily. The length and thread pitch must match your specific mower deck. A longer bolt might hit internal components or not thread fully. Check the OEM part number for the exact dimensions required. Compatibility is key to preventing vibration and damage.

What if the old bolt is stuck?

Use penetrating oil and allow it to soak for several hours. You may need a breaker bar for extra leverage. If it is still stuck, consult a guide on removing stuck mower blades. Avoid excessive force that could strip the threads or bend the spindle.