Worldwide Shipping
New 0S1571 Cap Screw Replacement suitable for Caterpillar Equipment
Exact Fit Guarantee
This part is guaranteed to fit your machine.
Wrong Part?
We'll overnight correct part at no cost to you.
Secure Checkout
•
Trusted Since 2012
Details
Description for 0S1571 Hex Bolt
â–¶Specification for 0S1571 Hex Bolt
â–¶Exact Fit Guarantee for 0S1571 Hex Bolt
â–¶Reviews
Customer Reviews
A Delay Handled the Right Way
Honestly, if I were in Miami like my shipment was, I wouldn?t have been in a hurry to ship out either. I was frustrated at first ? delays cost me time on the job ? but Propel Parts stepped up.
Deb, Daniel and the team owned the mistake, kept the communication clear, and graciously refunded my shipping costs without making it a hassle. That kind of accountability is rare these days, and I genuinely appreciated how they handled it.
Things don?t always go perfectly, but these folks proved they?re more interested in doing right by their customers than just pushing parts out the door. Solid company, solid people.
? Jimmy Spong
Hartco Mobile Welding
P.S. Incredible quality on the pin as well. I had to do some custom modifying, and let?s just say the case hardening was ? well ? hard. Great Stuff! Thank you.
Grateful I found this company!
I’m grateful I found this company! They answer the phone every time plus the parts are packaged very well!! Even the angriest mailman couldn’t damage your parts! lol The parts showed up as planned and for being aftermarket the quality seems to be good!! The warranty is the same as CAT. Thank you Daniel!!!
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!!!
Good Customer Service. Fast Shipping. A+++
Prompt service, Friendly people and hassle free
Had a great experience with ordering correct engine gaskets for our 3208 caterpillar engine
The gentleman was very helpful
When I had questions, they were answered quickly and kindly.
Thank you!!
Great company with outstanding customer service. Always get answers to my questions and always get my order to me quickly!
Great service They respond back very fast always try…
They respond back very fast always try there best to get what I need
Very friendly
Prices are reasonable
If there is a problem they fix it
Been working with them 4 years and hopefully many more
Product Questions
Frequently Asked Questions
What is the Caterpillar Cap Screw 0S1571?
The 0S1571 is a high-strength hex cap screw engineered for use in Caterpillar equipment assemblies. Browse our full range of Caterpillar hardware parts for all fastener options. The high-hex head design provides more contact area for wrenching, reducing the risk of rounding under high-torque applications.
Where is the 0S1571 cap screw typically used?
Cap screws of this type are used across a wide range of assembly points including engine covers, mounting brackets, transmission housings, and structural frames.
How do I know when a cap screw needs replacement?
Replace a cap screw if you notice:
- Stripped or damaged threads
- Rust, corrosion, or pitting along the shank
- Rounded head that no longer grips securely under a wrench
- Any deformation after over-torquing
What torque specification should I use for the 0S1571?
Torque specifications vary based on thread size, grade, and the assembly they're securing. Always refer to your Caterpillar service manual for the correct torque value.
Is the 0S1571 compatible with my machine?
Compatibility depends on your Caterpillar machine's model and serial number. Fitment should always be confirmed using your service documentation. Reach out to Propel Parts if you need assistance.
Does this cap screw meet OEM performance standards?
Yes ??? this is a premium aftermarket cap screw manufactured to meet or exceed OEM specifications. For related heavy equipment engine parts, visit our engine parts category.
What is the lead time and warranty for this part?
Propel Parts ships orders placed by 3:00 PM ET on weekdays the same day. All parts come with a 12-month unlimited mileage warranty. Propel Parts serves customers in over 90 countries.
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
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.