New 2K4973 Nut-Self Locking Replacement suitable for Caterpillar Equipment
- New Nut-Self Locking Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 2K4973 Self-locking Nut
â–¶Specification for 2K4973 Self-locking Nut
â–¶Exact Fit Guarantee for 2K4973 Self-locking Nut
â–¶| Models | 140G, 173B, 183B, 215, 215B, 215D, 216, 216B, 216B3, 225, 225D, 226B, 226B3, 227, 228, 229, 231D, 232B, 235, 235B, 235C, 236, 236B, 236B3, 236D, 242B, 242B3, 242D, 245, 245B, 245D, 246C, 246D, 247 |
|---|---|
| Dimensions | 0.59x0.59x0.31 |
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The Double Order Catastrophe
My co-worker placed an order and wasn't sure it went through online. I later placed the same order thinking the previous order didn't go through. To my surprise both orders went through, and I needed to cancel one of the orders. I called and spoke with someone who instructed me someone would contact me about the situation. I was contacted by Misty and she said she would do her best to cancel one of the orders but not sure if she could because they were next day orders. A small tome later I received an email saying she was able to cancel one of the orders. Thank you to Misty and the entire Propel Parts Team. Greatly appreciated!! -
Had a great experience with ordering correct engine gaskets for our 3208 caterpillar engine
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Great service affordable parts
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100% excelente
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Cat blade pins.
Easy transaction good web site.
Frequently Asked Questions
What is the 2K4973 nut used for?
The 2K4973 nut threads onto a bolt or stud to create and hold clamp load, locking the joint together against vibration. The right nut keeps a fastened assembly secure.
How do I install the 2K4973 nut?
A reliable installation of the 2K4973 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 2K4973 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 2K4973 compatible with?
The 2K4973 is matched to particular Caterpillar equipment, so always verify the application against your parts reference before purchasing. Or reach out to Propel Parts for help verifying fitment.
Does the 2K4973 nut meet performance standards?
Yes. Propel Parts supplies the 2K4973 as a premium aftermarket part made to meet OEM specifications. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications so you can fit it with confidence.
How often should the 2K4973 be replaced?
Replace the 2K4973 whenever the assembly it serves is overhauled, or any time it shows wear, damage, or corrosion. Following the intervals in your service manual is the best guide.
What are the signs of a worn or failing 2K4973 nut?
Catching a failing 2K4973 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 2K4973 important, and what related parts work with it?
Keeping the 2K4973 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 7W2519 Bolt Head and 2K0420 Washer.
This 2K4973 Self-locking Nut is compatible with the following models:
140G, 173B, 183B, 215, 215B, 215D, 216, 216B, 216B3, 225, 225D, 226B, 226B3, 227, 228, 229, 231D, 232B, 235, 235B, 235C, 236, 236B, 236B3, 236D, 242B, 242B3, 242D, 245, 245B, 245D, 246C, 246D, 247 & more...

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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