2n2766 Lock Nut for CAT 12G, 12H, 12H ES & more

  • New Lock Nut Replacement suitable for Caterpillar Equipment
  • Made to USA Specification

Buy with Confidence: All parts are covered by our warranty

$1.05

4.7

(Site rating)
In Stock | Ships Out Today | Order By 3pm ET
SKU
2N2766CTP
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Description for 2N2766 Self-locking Nut

This aftermarket Caterpillar 2N2766 Self-locking Nut is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar Self-locking Nut.
Direct Replacement: Engineered for a precise fit in Caterpillar equipment.
OEM-Spec Quality: Manufactured to match the performance of your original part.
Tested Reliability: Strict quality checks are performed before shipping.

Specification for 2N2766 Self-locking Nut

Replacement Part Number(s): 2N-2766
Specifications: Aftermarket Part | US OEM Specs.
Shipping: Same Day (Weekdays) | Order by 3pm.
Warranty: Unlimited Mileage | 1 Year Warranty.
Core: No Core Required | No Core Charge.
Weight: 0.02 LBS | 0.01 KG
Dimensions: 0.59 x 0.59 x 0.20 (inches)
Condition: New

Exact Fit Guarantee for 2N2766 Self-locking Nut

Looking for a reliable replacement Caterpillar 2N2766 Self-locking Nut ? Order with confidence through our Exact Fit Guarantee.
Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.
Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.
Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.
More Information
Models 120G, 12G, 12H, 12H ES, 12H NA, 130G, 140B, 140G, 140H, 140H ES, 140H NA, 143H, 14G, 14H NA, 160G, 160H, 160H ES, 160H NA, 163H NA, 1673C, 1674, 1693, 16G, 16H NA, 215B, 229D, 235, 235B, 235C, 245
Dimensions 0.59x0.59x0.20
Customer Reviews
  1. 100%
    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
  2. 100%
    Our CSR for Dymax Inc., Deb, has been extremely helpful and consistently provides quick, accurate information regarding parts and inventory. When we encounter difficulties finalizing transactions through the internal website, she is able to promptly generate quotes and provide an external, secure method for payment. Her responsiveness and willingness to assist play a key role in supporting our team’s success.
  3. 100%
    Excellent service!! Yes, very satisfied with the service, you have been very kind!
  4. 100%
    :) great service
  5. 100%
    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.
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Frequently Asked Questions

Product

What is the function of the 2N2766 lock nut?

The 2N2766 lock nut is a fastening component designed to secure bolts and threaded assemblies in engines and machinery. It helps prevent loosening due to vibration or dynamic loads, maintaining tight connections in critical applications.

How do I install the 2N2766 lock nut?

Please follow these general steps for proper installation:

  1. Ensure the engine or machine is turned off and safely supported.
  2. Place the lock nut onto the threaded stud or bolt and hand-thread it to the desired position.
  3. Use the specified wrench or socket to tighten the lock nut to the torque recommended in your service manual.
  4. Confirm the locking feature engages correctly to help resist loosening during operation.

Always refer to your equipment’s service documentation for exact torque values and safety procedures.

Which applications or systems use the 2N2766 lock nut?

The 2N2766 lock nut is used in a variety of engine and machine applications where secure fastening is critical, including mounting brackets, housings, or assemblies subject to vibration. Verify compatibility with your machine’s part references or service manual before ordering to ensure it fits your specific application. Check your manual or reach out to Propel Parts for help verifying fitment.

Does the 2N2766 lock nut meet performance expectations?

Yes, the 2N2766 lock nut is engineered to meet or exceed OEM specifications for fastening strength and durability. When replacing hardware, choose genuine or high-quality aftermarket parts that meet or exceed OEM expectations to ensure reliable fastening and long-lasting performance under demanding conditions.

How often should a lock nut like the 2N2766 be inspected or replaced?

Lock nuts should be inspected during routine maintenance or whenever assemblies are disassembled. Check for signs of loosening, thread wear, or corrosion. If the lock nut can no longer maintain secure tension or shows damage, it should be replaced to preserve proper fastening integrity.

What are common signs that the 2N2766 lock nut needs attention?

Typical indicators include:

  1. Visible loosening or play on the threaded assembly
  2. Corrosion or thread damage
  3. Difficulty holding torque
  4. Vibrations or noise from the fastened area

Addressing these signs promptly helps prevent further component issues and maintain safe operation.

Why is using a quality lock nut important for equipment performance?

A quality lock nut ensures that fastened components stay secure, even under vibration and dynamic loads. Using genuine or high-quality aftermarket parts that meet or exceed OEM expectations helps reduce the risk of loosening or failure, supports overall equipment reliability, and contributes to longer service life of assemblies.

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What is the 2N2766 lock nut used for in Caterpillar equipment?

The 2N2766 lock nut is designed to secure bolts and fasteners in Caterpillar machinery, preventing them from loosening due to vibration or heavy operation. It ensures a reliable and stable connection in engines, structural assemblies, and mechanical systems, helping maintain overall equipment safety and performance.

Which Caterpillar machines use the 2N2766 lock nut?

The 2N2766 replacement is used in multiple Caterpillar engine and heavy equipment platforms. Because fitment varies across machine configurations, always verify the 2N2766 part number in your equipment manual or parts catalog before ordering. The Propel Parts team can also quickly confirm whether it\'s the right match for your machine.

Why is a lock nut like the 2N2766 important in heavy equipment?

Lock nuts provide extra security for bolted connections. The 2N2766 Caterpillar lock nut helps:

  1. Prevent fasteners from loosening under vibration or stress
  2. Maintain proper torque and clamping force
  3. Protect equipment components from movement-related damage
  4. Ensure the stability and reliability of critical assemblies

Using the correct lock nut is essential to prevent equipment failure and costly repairs.

Does the 2N2766 lock nut meet OEM performance standards?

The 2N2766 meets OEM performance standards and is built to handle the same demanding conditions as the original. Need help confirming compatibility? The Propel Parts team can help identify the correct fit for your application.

How do you install the 2N2766 lock nut correctly?

Proper installation ensures secure fastening and equipment safety. General installation steps include:

  1. Turn off the machine and ensure the work area is safe
  2. Thread the 2N2766 lock nut onto the bolt or stud
  3. Tighten to the manufacturer's recommended torque specification
  4. Ensure the nut is properly seated and locked in place

Always follow your service manual for detailed torque and installation instructions.

When should the 2N2766 lock nut be replaced?

The lock nut should be replaced if it shows signs of wear, rounding, thread damage, or corrosion. Replacing worn or damaged 2N2766 lock nuts during maintenance helps maintain secure bolted connections and prevents equipment failure in heavy-duty applications.

Can I use an aftermarket replacement for the 2N2766 Caterpillar lock nut?

Yes, and many equipment operators prefer them. Premium aftermarket 2N2766 parts manufactured to meet or exceed OEM specs deliver comparable performance to original parts, often at a lower cost, while maintaining proper system function.

Questions About this Part?
Have a question about fit, compatibility, shipping, warranty, or returns?

This 2N2766 Self-locking Nut is compatible with the following models:
120G, 12G, 12H, 12H ES, 12H NA, 130G, 140B, 140G, 140H, 140H ES, 140H NA, 143H, 14G, 14H NA, 160G, 160H, 160H ES, 160H NA, 163H NA, 1673C, 1674, 1693, 16G, 16H NA, 215B, 229D, 235, 235B, 235C, 245 & more...

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.