New 2R0504 Lock Nut Replacement suitable for Caterpillar Equipment
- New Lock Nut Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 2R0504 Self-locking Nut
â–¶Specification for 2R0504 Self-locking Nut
â–¶Exact Fit Guarantee for 2R0504 Self-locking Nut
â–¶| Dimensions | 0.55x0.55x0.35 |
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Excellent and prompt response.
Propel parts team helped me greatly regarding a special request and I always get prompt response.
They’re fantastic! -
I would give 5 stars but my first time ordering from here and using aftermarket parts. The price is reasonable comparing to original Cat parts and the customer support is great and hoping to do more business with them
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Quick Response. Very much appreciated.
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Great pricing and fast shipping!
I'll admit that I was skeptical of propel parts, but they are an honest site and came through with the order. I was skeptical because I've never ordered heavy machinery parts, and didn't know who to trust. The parts that I ordered showed in stock, but after checking with their vendor, they only had half of the order in stock. I was notified the day after the order, and most of the parts arrived in a few days. There was one part that was not shipped putz but I was able to talk with who I assumed is the owner who rectified the situation and had the part overnighted to me.
I will say that communication speed could use a little work, but they will eventually get back with you. -
Will definitely use regularly!
Shipped the exact product we were looking for. Prompt Customer Service. Seamless cross-border shipping
Frequently Asked Questions
What is the 2R0504 nut used for?
The 2R0504 is a nut that pairs with a bolt or stud to clamp components together and resist loosening under load.
How do I install the 2R0504 nut?
A reliable installation of the 2R0504 starts with inspection and ends with verification. Follow this process:
- Shut the machine down and isolate power before service
- Clean the threads on the stud or bolt and inspect them
- Thread the 2R0504 on by hand to confirm it runs freely
- Tighten to the specified torque in the correct sequence
- Re-check the torque after the first operating cycle if advised
Which Caterpillar machines is the 2R0504 compatible with?
Fitment for the 2R0504 depends on your specific Caterpillar model and the assembly it serves, so confirm the application before you order. Check your manual or reach out to Propel Parts for help verifying fitment.
Does the 2R0504 nut meet performance standards?
Yes. The 2R0504 is manufactured to meet OEM specifications for tolerance and material quality. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications for dependable, long-term performance.
How often should the 2R0504 be replaced?
Plan to replace the 2R0504 during a rebuild of the surrounding components, or sooner if inspection shows it is past its serviceable limit.
What are the signs of a worn or failing 2R0504 nut?
Catching a failing 2R0504 early prevents wider damage. The common warning signs include:
- A loosening joint or lost torque
- Rounded, stripped, or corroded threads
- A nut that won't hold position under vibration
- Damage to the mating washer or surface
Why is the 2R0504 important, and what related parts work with it?
Keeping the 2R0504 in good condition protects the components around it and supports smooth, reliable operation. Maintaining the assembly with parts that meet OEM specifications helps you avoid unplanned downtime. Related hardware on our site includes 2592627 Bolt and 3B4507 Lockwasher.

We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.
We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.
Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.

Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.

Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
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