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New 4F4879 Screw Cap Replacement suitable for Caterpillar Equipment
- New Screw Cap Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 4F4879 Hex Bolt
â–¶Specification for 4F4879 Hex Bolt
â–¶Exact Fit Guarantee for 4F4879 Hex Bolt
â–¶| Dimensions | 0.59x0.39x0.39 |
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I was able to source my parts with propelparts in one click pay and have the shipment worked on under 60 minutes, with various options of couriers i received my shipments in less than 10days
The parts a durable and efficient -
Great customer service answered email question quickly.
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I would give 5 stars but my first time ordering from here and using aftermarket parts. The price is reasonable comparing to original Cat parts and the customer support is great and hoping to do more business with them
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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! -
I’ve been ordering parts from propel for about 3 years & counting. I live in Hawaii where we have a hard time getting parts especially for decent prices with fast shipping. I've been 100% satisfied with the company and the customer service and will continue to use them. I recommend propel to everyone here in Hawaii and we are all happy to have you guys. Thank you!!!
Frequently Asked Questions
What is the 4F4879 cap screw used for?
The 4F4879 is a cap screw used to fasten parts on Caterpillar equipment, delivering the controlled clamp load a secure joint depends on.
How do I install the 4F4879 cap screw?
To install the 4F4879 properly, prepare the area first and confirm the result afterward. Use these steps:
- Shut the machine down and isolate power before service
- Verify the thread condition on both the 4F4879 and its bore
- Clean the mating surfaces so nothing interferes with seating
- Hand-thread the screw first, then bring it to the initial torque
- Apply the final torque in the sequence given in your manual
- Re-check after the first operating cycle if the manual advises
Which Caterpillar machines is the 4F4879 compatible with?
Compatibility for the 4F4879 cap screw varies by machine and configuration, so cross-check it for your Caterpillar equipment before ordering. If you are unsure don’t hesitate to reach out to Propel Parts for help verifying fitment.
Does the 4F4879 cap screw meet performance standards?
Yes. The 4F4879 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 4F4879 be replaced?
The 4F4879 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 8S6045 Shim Liner is commonly replaced at the same time.
What are the signs of a worn or failing 4F4879 cap screw?
A worn 4F4879 usually gives early warning through the assembly it supports. Watch for these signs:
- A joint that gradually loses torque or works loose
- Damaged, galled, or corroded threads
- Elongation or a thinned, necked shank
- Vibration, movement, or leaks where it clamps
Why is the 4F4879 cap screw important, and what related part is commonly replaced with it?
A sound 4F4879 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 8T4131 Nut is frequently replaced alongside this part.
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.
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