Our Quality Promise

SOS Prescott is a dedicated family-owned and operated business that promises to deliver the highest quality products from start to finish. Your company has high expectations when you order, and SOS delivers. Using some of the latest technology in quality control, we’re able to improve our production capabilities continually, so you get the best of the best at competitive prices.

We guarantee that we’ll meet critical dimensions at every step of the way, and our quality control inspections ensure that no stone is left unturned before your order is sent your way. If your parts require additional services (i.e., plating, heat treating, etc.), everything will be documented as certified to your specifications.  All parts undergo a further final quality inspection before shipping.


At SOS, getting your orders to your door on time is always a priority. We ship over 8 million parts annually, and our on-time delivery rate averages over 99%. SOS works with multiple shipping companies to meet our customers’ needs, and we use many different packaging methods to make sure your product gets there, how you need it and when you need it.

SOS Prescott manufactures a wide variety of high-quality products.
To maximize customer satisfaction, we strive for 100% on-time delivery with zero defects.
This will be achieved through a culture of continuous improvement and the development of long-term relationships with customers, suppliers, and SOS employees.

TÜV SÜD Certificate

ISO 9001:2015 Certified Since 2006

SOS Prescott first achieved ISO 9001 certification for our quality management system in 2006, which we still maintain. SOS takes pride in continuously improving our quality and customer service.

Our customers can expect high-quality parts and responsive customer service because of the processes we have in place, outlined by our quality management system. We do an internal audit of our Quality Management System annually to ensure we are performing according to those guidelines. TUV SUD also conducts an independent audit annually of our processes, and issues SOS a new certificate every three years.

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Parker Gold Link Strategic Supplier Award, Hydraulic Valve Division

2020, 2019, 2018, 2017

SOS Prescott is the only supplier to win this award for 4 years in a row.

“In recognition of your steadfast dedication to the Process of Continuous Improvement and your execution of excellence in all key metrics. As a Gold Link Strategic Supplier, you are essential to the visibility, velocity, and innovation of our supply chain, and our business.”

Donaldson Co Strategic Supplier Award
Donaldson Co Strategic Supplier Award

Donaldson Company Inc Strategic Supplier

2011, 2010

“In recognition of your outstanding performance as a Strategic Supplier to Donaldson Co., Inc.”

Parker Certificate of Excellence

Parker Certificate of Excellence, Quick Coupling Division


“For outstanding delivery and quality performance.”

Sundstrand Sauer Certified Vendor

“For performance in supplying quality products.”

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