New 7X0851 Nut Replacement suitable for Caterpillar Equipment
- New Nut Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 7X0851 Hex Nut
▶Specification for 7X0851 Hex Nut
▶Exact Fit Guarantee for 7X0851 Hex Nut
▶| Models | 315B, 315C, 315D L, 316E L, 318D L, 318D2 L, 320B, 320C, 320D, 320D GC, 320D L, 320D LRR, 320D RR, 320D2 GC, 320E, 320E RR, 321D LCR, 322B L, 322C, 323D L, 323D LN, 324D, 324D L, 324E, 325, 325 L |
|---|---|
| Dimensions | 1.38x1.38x0.79 |
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Fast response. Great price. Good communication not much time waiting for a answer
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Above and Beyond
Staff took care of issue that was nit created by them. Package was lost by UPS. Propel sent me another part Next Day Air to correct it. -
A Delay Handled the Right Way
Honestly, if I were in Miami like my shipment was, I wouldn?t have been in a hurry to ship out either. I was frustrated at first ? delays cost me time on the job ? but Propel Parts stepped up.
Deb, Daniel and the team owned the mistake, kept the communication clear, and graciously refunded my shipping costs without making it a hassle. That kind of accountability is rare these days, and I genuinely appreciated how they handled it.
Things don?t always go perfectly, but these folks proved they?re more interested in doing right by their customers than just pushing parts out the door. Solid company, solid people.
? Jimmy Spong
Hartco Mobile Welding
P.S. Incredible quality on the pin as well. I had to do some custom modifying, and let?s just say the case hardening was ? well ? hard. Great Stuff! Thank you. -
Awesome and diligent support. Would definitely recommend
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Science I buy parts from propel parts I don’t have to spend too much down time always on time and good service
Frequently Asked Questions
What is the 7X0851 nut used for?
The 7X0851 is a nut that pairs with a bolt or stud to clamp components together and resist loosening under load.
How do I install the 7X0851 nut?
Fitting the 7X0851 correctly comes down to clean surfaces and following the manual’s sequence. Work through these steps:
- Shut the machine down and isolate power before service
- Clean the threads on the stud or bolt and inspect them
- Thread the 7X0851 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 7X0851 compatible with?
Fitment for the 7X0851 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 7X0851 nut meet performance standards?
Yes. The 7X0851 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 7X0851 be replaced?
Plan to replace the 7X0851 during a rebuild of the surrounding components, or sooner if inspection shows it is past its serviceable limit. This part is commonly replaced alongside the 7M4340 Lock Bolt, so it is worth checking both while the assembly is open.
What are the signs of a worn or failing 7X0851 nut?
When the 7X0851 reaches the end of its service life, the symptoms tend to show up first as performance or wear issues. Look for:
- 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 7X0851 nut important, and what related part is commonly replaced with it?
Replacing the 7X0851 when needed keeps the system within its designed clearances and loads, which extends the life of the surrounding parts and supports dependable performance. The 8S6045 Shim Liner is commonly serviced together with this part, so it is worth replacing both while access is available.
This 7X0851 Hex Nut is compatible with the following models:
315B, 315C, 315D L, 316E L, 318D L, 318D2 L, 320B, 320C, 320D, 320D GC, 320D L, 320D LRR, 320D RR, 320D2 GC, 320E, 320E RR, 321D LCR, 322B L, 322C, 323D L, 323D LN, 324D, 324D L, 324E, 325, 325 L & 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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