New 1K6870 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 1K6870 Self-locking Nut
â–¶Specification for 1K6870 Self-locking Nut
â–¶Exact Fit Guarantee for 1K6870 Self-locking Nut
â–¶| Models | 10B, 120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140B, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2 |
|---|---|
| Dimensions | 1.22x1.22x0.63 |
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Frequently Asked Questions
What is the 1K6870 nut used for?
The 1K6870 is a nut that pairs with a bolt or stud to clamp components together and resist loosening under load.
How do I install the 1K6870 nut?
To install the 1K6870 properly, prepare the area first and confirm the result afterward. Use these steps:
- Shut the machine down and isolate power before service
- Clean the threads on the stud or bolt and inspect them
- Thread the 1K6870 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 1K6870 compatible with?
Compatibility for the 1K6870 nut varies by machine and configuration, so cross-check it for your Caterpillar equipment before ordering. Check your manual or reach out to Propel Parts for help verifying fitment.
Does the 1K6870 nut meet performance standards?
Yes. The 1K6870 is engineered to meet OEM specifications for material, dimensions, and durability. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications so the part performs the way it was designed to.
How often should the 1K6870 be replaced?
The 1K6870 is typically renewed during scheduled service or a related repair. In demanding, high-hour operation, inspect it more often to stay ahead of wear. When servicing this area, the 8T0375 Bolt is commonly replaced at the same time.
What are the signs of a worn or failing 1K6870 nut?
A worn 1K6870 usually gives early warning through the assembly it supports. Watch for these signs:
- 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 1K6870 nut important, and what related part is commonly replaced with it?
A sound 1K6870 is inexpensive insurance against larger repairs. Servicing it on time with parts that meet OEM specifications keeps the whole assembly working as intended. During an overhaul, the 1R6573 Washer is frequently replaced alongside this part.
This 1K6870 Self-locking Nut is compatible with the following models:
10B, 120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140B, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2 & more...

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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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