Husqvarna 532193003 Pack of 2 Blade Bolt & Washer Assembly

What It Is

This is a set of two OEM blade bolts with integrated washers (Part #532193003) designed to secure the cutting blade(s) to the crankshaft on select Husqvarna and compatible lawn mower decks. Each bolt assembly replaces the original hardware for a secure, vibration-resistant blade mount.

Fitment & Compatibility

• Deck size: Works with most 38", 42", 46", 48", and 54" Husqvarna decks (check your model’s bolt size—this is 5/16"-24 thread, 1.25" long with a 16mm hex head).
• Brand/model: Direct fit for Husqvarna, Poulan Pro, Jonsered, and some Craftsman, McCulloch, or Weed Eater models using the same bolt pattern. Verify your current bolt has the same thread pitch and head size.
• OEM vs aftermarket: This is genuine Husqvarna OEM—higher grade steel than generic bolts. Aftermarket bolts may have looser tolerances or softer metal that can strip.
• What to measure: Remove one existing bolt and check thread pitch (5/16"-24 is fine thread; 5/16"-18 coarse will not fit). Also confirm the bolt length clears your blade and deck spindle.

Key Things to Know

• Torque spec: Tighten to 35–45 ft-lbs (use a torque wrench—over-tightening can strip the crankshaft threads, under-tightening can loosen the blade).
• Installation: Use a 16mm socket or wrench. The integrated washer prevents the bolt from spinning loose during operation.
• Replacement interval: Replace bolts every time you swap blades (roughly every 25–50 hours of mowing). Old bolts can fatigue and snap.
• Common gotcha: Do not reuse old bolts—the thread-locking coating wears out. These come pre-coated with a thread-locking compound; no extra Loctite needed.

Should You Buy It

If you own a Husqvarna or compatible mower and want a secure, hassle-free blade mount without sourcing aftermarket hardware, this is a solid choice. It’s priced fairly for OEM quality and includes the right thread-lock coating, saving you a trip to the hardware store. Best for anyone doing routine blade swaps who values reliability over saving a few bucks on generic bolts.