Details
Description for 314155 Self-locking Nut
â–¶Specification for 314155 Self-locking Nut
â–¶Exact Fit Guarantee for 314155 Self-locking Nut
â–¶Reviews
Customer Reviews
Prompt service, Friendly people and hassle free
BEST for Heavy Equipment Parts.
Awesome quality products! Better customer service! Steven is always a pleasure to work with and very prompt in assisting me - thank you!
Excellent experience.
Mike has been very helpful. I am looking forward to keep doing business with them
Great customer service answered email question quickly.
100% excelente
Great customer service.
Prompt , knowledgeable and friendly service.
Very nice job
Australian buyer, sales where professional and very responsive with secure parts identification.
Highly recommend.
Bedrock Exploration Pty Lt, Australia
Customer Follow-Up After Delivery:
Thank you Deb and your colleague Anthony A for your help in supplying a replacement part which arrived in good time and is running smoothly.
I shall continue to use your services and recommend you to other remote miners, as your services and delivery times are better than our home-based suppliers.
With thanks again.
Regards, Gerard
Buen servicio y atención
Excellant customer service!
The prices are very good! The customer service is excellant! I had to contact them because our tax info wasn't right and they refunded it on the spot! Great job! we will be doing a lot more ordering from thi company. Highly recommended!
Product Questions
Frequently Asked Questions
What is the 0314155 nut used for?
The 0314155 is a nut that pairs with a bolt or stud to clamp components together and resist loosening under load.
How do I install the 0314155 nut?
A reliable installation of the 0314155 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 0314155 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 0314155 compatible with?
Fitment for the 0314155 depends on your specific Caterpillar model and the assembly it serves, so confirm the application before you order. Or reach out to Propel Parts for help verifying fitment.
Does the 0314155 nut meet performance standards?
Yes. The 0314155 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 0314155 be replaced?
Plan to replace the 0314155 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 0314155 nut?
Catching a failing 0314155 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 0314155 important, and what related parts work with it?
Keeping the 0314155 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 3B4507 Lockwasher.
Compatible Models
This 314155 Self-locking Nut is compatible with the following models:
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 140M 3, 140M & more...
Shipping | Returns
Shipping
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.
Easy Returns
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.
Warranty
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.
Exact Fit Guarantee
Exact Fit Guarantee®
The right part — or we'll make it right.
Order Normally
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Place your order, then send us your serial number before it ships.
We'll verify fit.We Make It Right
Wrong part? We'll make it right.Fast. At our expense.

