OSP Manufacturing Capabilities: From Precision Machining to Full-Service Solutions

Full-Service Precision Manufacturing

At Ohio Screw Products, Inc. (OSP), we believe that true precision manufacturing is more than machining parts — it’s about providing a complete solution that takes a customer’s design from concept to finished, ready-to-use product. With more than 75 years of experience, an employee-owned culture, and certifications including ISO and ITAR, OSP has built a reputation as a reliable contract manufacturing partner across industries such as aerospace, automotive, defense, medical, and industrial equipment.

Our capabilities extend well beyond machining. We offer a full suite of in-house processes that allow us to maintain control over quality and consistency, paired with a network of trusted outsource partners that provide specialized treatments and finishes. This integrated approach ensures every part we deliver meets the highest standards of performance, precision, and traceability.

End-to-End Manufacturing Solutions

What makes OSP unique is the ability to combine these capabilities into a complete solution. By integrating machining, finishing, testing, assembly, and packaging, we eliminate the need for multiple vendors and reduce supply chain complexity. This approach offers customers:

• One point of accountability – A single partner from raw material to finished assembly

• Certified quality and traceability – Backed by ISO and ITAR compliance

• Efficiency and reliability – Optimized processes that ensure parts are delivered on time and within spec

In-House Capabilities

The foundation of OSP’s success lies in our advanced machining technologies and support services performed under one roof. These insourced capabilities allow us to maintain complete oversight, minimize lead times, and provide repeatable results for even the most complex projects.

Multi-Axis CNC Turning

Our multi-axis CNC lathes are capable of producing intricate geometries with superior precision. These machines handle tight tolerances and complex features, making them ideal for industries where accuracy is non-negotiable. CNC turning at OSP supports both low- and high-volume production runs, giving customers flexibility without sacrificing consistency.

Milling

High-precision milling machines allow us to create complex shapes, slots, and surfaces. Whether producing flat, angled, or contoured components, our milling operations deliver the accuracy and repeatability required by industries such as aerospace, automotive, and medical device manufacturing.

ID/OD Threading

Threading is an essential requirement in many applications. OSP provides both internal and external threading services, ensuring that every part meets fit, function, and compatibility requirements.

Grinding (ID/OD)

For applications requiring exact surface finishes and close dimensional accuracy, our grinding capabilities deliver results. Both internal and external grinding processes allow us to achieve tolerance levels necessary for high-performance assemblies.

Polishing

OSP provides in-house polishing services to achieve functional finishes, reduce friction, and meet cosmetic standards. This step ensures parts not only perform correctly but also meet the aesthetic requirements of industries such as medical devices and consumer products.

Multi-Spindle Machining

Our multi-spindle machines combine speed with precision, allowing us to efficiently manufacture high-volume parts while maintaining quality. These machines are ideal for components that require quick cycle times without compromising tolerances.

Polygon Turning

Polygon turning enables the creation of non-cylindrical features directly on a lathe, saving time and improving precision. This process supports specialized applications that require multi-faceted shapes or drive features.

Custom Tooling Design & Build

Every part begins with the right tooling. At OSP, we design and build custom tooling in-house, allowing us to optimize each process for efficiency and accuracy. Custom tooling reduces setup time and ensures repeatable performance across production runs.

Precision Washing & Deburring

Clean parts are critical for performance in industries such as aerospace and medical. OSP offers precision washing and both manual and automated deburring to remove contamination, sharp edges, and burrs. This ensures that every component leaving our facility is production-ready.

Part Marking

Traceability and compliance are critical. Our in-house part-marking capabilities allow us to provide permanent identification, meeting customer and industry standards for serialized and coded components.

Resistance Welding & Assembly

OSP supports customers who need assemblies rather than individual parts. Resistance welding, combined with sub-assembly and full assembly services, allows us to deliver turnkey solutions that reduce supply chain complexity.

Kitting & Packaging

Our manufacturing support services extend to kitting and packaging, ensuring that parts are delivered in customer-specific configurations that streamline final integration.

Outsourced Capabilities

In addition to our robust in-house services, OSP partners with trusted, certified vendors to provide specialized treatments and finishes. These outsource processes are carefully monitored and fully traceable, ensuring that every part meets industry and customer specifications.

Heat Treating

Heat treating enhances the strength, durability, and wear resistance of metals. OSP coordinates a wide range of processes, including:

• Vacuum heat treating

• Annealing

• Carburizing

• Carbonitriding

• Induction hardening

• Precipitation hardening

• Normalizing

• Stress relieving

Each treatment is selected to match the performance needs of the final part, whether that means added toughness, improved fatigue resistance, or dimensional stability.

Plating & Coating

To extend product life and improve functionality, OSP offers multiple plating and coating options. These include:

• Zinc

• Chromate conversion

• Anodize

• Masking

• Gold

• Silver

• Nickel

• Tin

• Chrome

• Black oxide

These finishes enhance corrosion resistance, electrical conductivity, and surface hardness, while also meeting cosmetic and industry-specific requirements.

Cleaning & Nondestructive Testing (NDT)

In industries such as aerospace and medical, validated cleanliness and structural integrity are non-negotiable. OSP manages outsourced cleaning and NDT services including:

• Passivation

• Fluorescent penetrant inspection

• Magnetic particle inspection

• Eddy current testing

• Ultrasonic testing

• Electropolishing

These methods verify that every component is free from defects and compliant with rigorous industry standards.

Advanced Deburring

For parts with complex geometries or internal passages, traditional deburring may not be sufficient. OSP provides advanced outsourced options such as thermal deburring and electro-chemical deburring, ensuring that even hard-to-reach areas are burr-free.

Partner with OSP

When you choose OSP, you gain a manufacturing partner with the expertise, certifications, and capabilities to support your most demanding projects. From CNC turning and milling to heat treating, plating, and assembly, we provide a complete package that ensures precision, consistency, and reliability at every step.

Contact OSP today to learn how our full-service capabilities can support your next project with proven performance and trusted results.