Husqvarna Washer OEM #505169801

Maintain the structural integrity and safe assembly of your Husqvarna outdoor power equipment with the genuine OEM Washer (Part #505169801). This is a certified OEM product made with the highest quality assurance standards, ensuring your Husqvarna outdoor power equipment will work in its top condition. This factory-original washer is a precision fastening component that distributes clamping load, protects mating surfaces, prevents fastener pull-through, and maintains correct dimensional spacing throughout the equipment’s working life.

Also Known As:

• Flat Washer / Plain Washer / Precision Washer
• Thrust Washer / Assembly Washer
• Hardware Washer / Seating Washer

Key Features:

• Genuine OEM Part – Manufactured by Husqvarna to exact factory specifications for correct inner diameter, outer diameter, and thickness — the three critical dimensions that determine whether a washer functions correctly in its intended application
• Precision Load Distribution – Spreads fastener clamping force evenly across the mating surface, preventing damage, deformation, or pull-through that can occur with undersized or improperly dimensioned aftermarket substitutes
• Protects Mating Surfaces – Creates a stable, hardened bearing surface between the fastener and the softer housing or component material, reducing wear and extending assembly life
• Vibration Resistance – Maintains consistent clamping preload in the high-vibration environment of Husqvarna handheld power equipment, where generic hardware-store washers can compress, deform, or loosen over time
• Designed to help spread the load, prevent damage to the surface being fixed, and provide insulation — and can also be important for preventing galvanic corrosion
• Part of the 505 Series Hardware Family – Shares a part number prefix with Spacer Sleeve #505173301 and Washer #505173001, suggesting these components may work together within the same assembly — inspect all related hardware when servicing
• Sold Individually – Order the exact quantity needed for your repair
• Direct-Fit Replacement – Manufactured to the same dimensional tolerances as the original, ensuring correct seating and function without modification

Why Genuine OEM Washers Matter: Some washers are unique to the parts they are fastened to — while they may look a lot like those found in a hardware store, we always suggest purchasing replacement washers from a genuine OEM original parts dealer to ensure they fit exactly as intended for safe operation. A washer that differs even slightly in inner diameter, outer diameter, or thickness can result in insufficient clamping force, fastener movement, surface damage from an oversized bearing area, or interference with adjacent components. Only a genuine Husqvarna OEM washer provides the dimensional precision the original design requires.

Part Details:

• OEM Part Number: 505169801
• Also Listed As: 5051698-01
• Part Type: Washer / Flat Washer / Precision Washer
• Related Parts: Spacer Sleeve #505173301, Washer #505173001 (same 505 series hardware family)
• Brand: Husqvarna (Genuine OEM)
• Application: Husqvarna outdoor power equipment (chainsaws, trimmers, brushcutters, and related equipment)