Worldwide Shipping
New 8T5439 Washer-Hard Replacement suitable for Caterpillar Equipment
- New Washer-Hard Replacement suitable for Caterpillar Equipment
- Made to USA Specification
Buy with Confidence: All parts are covered by our warranty
Exact Fit Guarantee
This part is guaranteed to fit your machine.
Wrong Part?
We'll overnight correct part at no cost to you.
Description for 8T5439 Washer
â–¶Specification for 8T5439 Washer
â–¶Exact Fit Guarantee for 8T5439 Washer
â–¶| Dimensions | 1.97x1.97x0.16 |
|---|
-
Great affordable option for aftermarket parts
Found Propel Parts while looking for parts to repair a D6C dozer that has been sitting for 20 years. Great parts, great prices, fast shipping and excellent customer service. -
Excellent and prompt response.
Propel parts team helped me greatly regarding a special request and I always get prompt response.
They’re fantastic! -
Great customer services, the best
-
Satisfied Customer.
I made my first purchase from Propel Parts last week. I was very happy with the response time and the delivery was fast, fast, fast! Also, the quality of the product is superb and at a great low price.
Keep up the great work! -
customer service and parts availability is fantastic
Frequently Asked Questions
What is the Caterpillar 8T5439 Hard Washer used for?
The 8T5439 is a hardened washer used in Caterpillar equipment to distribute bolt or nut clamping loads across a larger surface area, preventing embedment into softer base materials and maintaining proper fastener clamp force in structural and mechanical assemblies.
How do I know if the 8T5439 Washer needs to be replaced?
Replace the washer if it shows visible deformation, cupping, cracking, or corrosion that could compromise its load-bearing ability. Hardened washers are low-cost wear items and should be replaced whenever fasteners are removed during service.
Is the 8T5439 Hard Washer compatible with my Caterpillar machine?
Check your equipment's service or parts manual for the correct washer specification. If you are still unsure, reach out to Propel Parts our team will be happy to help you verify if this part fits your equipment.
What makes a hardened washer different from a standard washer?
- A hardened washer is made from heat-treated steel with a significantly higher surface hardness than a standard washer.
- This prevents it from deforming under high clamping forces, which is critical in heavy equipment applications where fastener preload must remain consistent under vibration and shock loads.
Is the 8T5439 a high-quality aftermarket part?
Yes, this is a high-quality aftermarket washer manufactured to meet or exceed OEM specifications for hardness, dimensions, and material grade, ensuring it performs just like the original Caterpillar hard washer.
What warranty does the 9R9401 Disc include?
It is covered by a 1-year unlimited mileage warranty and Propel Parts' 30-day no-hassle return policy. No core charge applies, and same-day shipping is available for weekday orders placed before 3:00 PM ET.
Do Propel Parts carry bonded or sealing washers as well?
Yes. If your application requires a sealing washer, Propel Parts also carries the 5R7137 Bonded Sealing Washer, which combines a metal washer with an elastomeric seal for applications where fluid-tight fastening is required.
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®
The right part — or we'll make it right.
Order Normally
Know your part number? Simply place your order.
Not Sure?
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.
1 YEAR UNLIMITED WARRANTY
ORDER BY 3PM EST. EXCL. WEEKEND
NO CORE OR EXCHANGE CHARGES
EASY RETURNS & FAST REFUNDS
