Overview – WASHER-M24 PLAIN 526-0399-72
526-0399-72 is the M24 plain washer used on CUMMINS and Onan generator sets to spread the clamping load of the mounting fasteners across the bracket surface. We can supply this washer as well as the related mounting hardware, in stock or available on order – welcome to enquire by part number.
Parts Characteristics
The washer is a flat steel disc with a 24 mm nominal bore, machined with parallel faces so the bolt head or nut sits square under torque. The outer diameter is sized to the original mounting bracket so the clamp load is distributed evenly and the bracket face is not damaged. The surface is protected against corrosion for generator enclosure service. As an OEM-spec washer, it fits the original bolt without filing or reaming.
Applicable Models & Applications
This M24 plain washer is used on CUMMINS and Onan generator sets where the mounting fasteners require the original bore and outer diameter. Typical applications include the generator mounting feet, engine-to-skid brackets and accessory support assemblies. Confirm the bore size and outer diameter against the washer removed from your machine before ordering.
Maintenance & Replacement
Check the mounting washers whenever the generator set is re-installed or when loose mounting fasteners are found. Look for distortion, corrosion and cracks around the bore, which allow the fastener to sink into the bracket. When replacing, clean the mounting face, fit the new washer under the bolt head or nut and torque to the original specification. Replace washers in matched sets so the clamping load stays even.
Price Reference (USD)
The reference price for this WASHER-M24 PLAIN (526-0399-72) is approximately USD 3 – 25 per unit depending on grade, quantity and shipping destination. This is a planning estimate only – confirm current pricing and availability with our sales team before ordering.
Value & Service
A distorted washer can loosen the mounting fasteners under generator vibration, so we verify 526-0399-72 against the original CUMMINS bore and outer diameter before dispatch. We stock the washer together with the mounting bolts and nuts, and they can ship in one tracked order. Our team will confirm the correct hardware for your generator set before you buy.
Racer Machinery is a dedicated construction-machinery parts supplier – send us your part number and machine model, and we will confirm fitment, price and lead time for this washer and related CUMMINS mounting components.
