Amco 1-1/8″ Lockwasher OEM #10336

Keep your Amco disc harrow’s axle and gang assembly securely fastened through the most demanding tillage conditions with this Genuine OEM 1-1/8″ Lockwasher (Part #10336). AMCO Manufacturing has been building tough tillage tools since 1947, and their equipment features 1-1/8″ axles across a wide range of disc harrow and hipper models. This factory-correct lockwasher is precision-manufactured to exact Amco specifications — delivering the correct inside diameter, spring tension, and material hardness required to maintain secure axle nut clamping and prevent fastener loosening under the extreme vibration, shock loads, and soil resistance forces generated during field operations. 

Why the Lockwasher Is Critical in Disc Harrow Axle Assemblies:
Disc harrow gang axles operate under relentless vibration, side loading, and impact forces as blades cut through soil, crop residue, rocks, and hardpan. Without a properly functioning lockwasher, the axle nut can gradually back off under these forces — allowing the gang assembly to develop axial play, accelerating bearing wear, causing blade and spool misalignment, and ultimately leading to costly gang axle and bearing failure. AMCO pioneered agricultural anti-friction bearings, including the triple lip sealed and regreasable bearings used in their disc harrows — and maintaining the correct lockwasher tension is essential to protecting that bearing investment and the entire gang axle assembly.

Signs Your Lockwasher Needs Replacement:

• Visible deformation, flattening, or loss of spring tension in the washer
• Axle nut repeatedly backing off or losing torque during field operation
• Excessive axial play developing in the gang assembly between field operations
• Corrosion, pitting, or cracking of the washer surface
• Routine gang axle service, bearing replacement, or axle nut maintenance
• Lockwasher damaged or missing from the axle assembly

Key Features:

• Genuine Amco OEM part — not an aftermarket substitute
• 1-1/8″ inside diameter — factory-correct sizing for Amco 1-1/8″ square and round gang axle hardware
• Hardened spring steel construction — resists deformation and maintains clamping tension under heavy vibration and shock loads
• Prevents axle nut loosening during field operation — protecting bearings, spools, and gang assembly integrity
• Factory-correct material and dimensional specifications for proper torque retention
• Direct OEM replacement — installs to factory specification without modification

Compatibility:
This 1-1/8″ lockwasher is used across Amco disc harrows and tillage equipment featuring 1-1/8″ axles, including various disc harrow, hipper, and tillage implement models. Always confirm fitment using your Amco model and serial number — found on the equipment identification plate on the frame — and cross-reference against your unit’s parts manual before ordering to verify the correct lockwasher specification for your specific axle and gang hardware configuration. 

Part Details:

• Part Number: 10336
• OEM Brand: Amco Manufacturing
• Part Type: Lockwasher
• Size: 1-1/8″
• Material: Hardened Spring Steel
• Application: Disc Harrow / Tillage Equipment Axle Assembly
• Condition: New / Genuine OEM