OSP Quality: Precision, Integrity, and Certified

At Ohio Screw Products, Inc. (OSP), quality is more than a department — it is the foundation of everything we do. Since 1945, our employee-owned company has been dedicated to delivering precision-machined parts that meet the highest standards of performance and reliability. With ISO and ITAR certifications, rigorous material testing, and a culture of accountability, OSP ensures every customer receives parts they can trust.

A Legacy of Quality Since 1945

For nearly eight decades, OSP has earned a reputation as a contract manufacturing partner that puts quality first. From the moment raw material enters our facility to the time finished components are shipped, every step of the process is built on standards, documentation, and verification. As a 100% employee-owned company, every team member is directly invested in your satisfaction, which means our commitment to excellence runs deep.

Our customers count on OSP for accuracy, repeatability, and reliability — values that define the quality of every part we deliver.

Certified Quality Systems

OSP operates under a rigorous quality management system, certified to both ISO and ITAR standards. These certifications demonstrate our ability to consistently provide products that meet customer and regulatory requirements. More importantly, they reflect the processes and discipline we apply across every job:

• ISO Certification: Ensures repeatable processes, continuous improvement, and customer satisfaction.

• ITAR Certification: Confirms compliance with strict U.S. defense manufacturing requirements.

By holding these certifications, OSP provides confidence that parts meet industry-specific regulations while maintaining traceability and accountability throughout production.

Material Testing & Verification

Precision machining begins long before a part reaches a CNC machine. At OSP, quality starts with material selection and testing. Every raw material we use is fully tested, certified, and documented before it moves into production.

Our material testing process includes:

• Certified sourcing from trusted, approved mills and suppliers.

• Chemical analysis to verify alloy content and remove impurities.

• Mechanical testing for strength, hardness, and ductility.

• Corrosion testing for stainless steel, aluminum, and specialty alloys.

• Traceability of every batch for full documentation and accountability.

This foundation ensures that parts are built with materials proven to perform reliably in their intended applications.

First Article, In-Process & Final Inspection

At OSP, inspection is not just a final step — it is integrated into every stage of the process. Our team applies first article inspection (FAI), in-process checks, and final inspections to confirm dimensional accuracy and performance.

• First Article Inspection (FAI): Conducted on initial production runs to verify that processes, tooling, and materials meet all engineering specifications before full-scale manufacturing begins. This step ensures that any issues are addressed up front, eliminating risk and ensuring repeatability.

• In-process inspection: Ensures issues are identified and corrected immediately, minimizing waste and rework.

• Final inspection: Validates that every component leaving our facility meets exact specifications and tolerances.

Advanced measuring tools, coordinate measuring machines (CMMs), and precision gaging are used to confirm compliance with customer requirements.

Precision Machining with Tight Tolerances

Our machining capabilities — including CNC machining, multi-spindle machining, milling, grinding, and threading — are designed to produce parts with tight tolerances and repeatable accuracy. By combining modern CNC technology with decades of machining expertise, OSP ensures consistent quality whether you need a prototype, a small batch, or a full production run.

Every machine operator is trained to follow quality standards, and as employee-owners, they understand the importance of delivering perfection on every job.

Quality Beyond the Machining

OSP’s commitment to quality extends beyond machining. Many parts require secondary processes, finishes, or assemblies before they are production-ready. We ensure these steps are performed with the same rigor as machining.

• Precision washing & deburring: Clean, smooth parts free from burrs or contaminants.

• Polishing & grinding: Finishes that meet functional and cosmetic requirements.

• Part marking & packaging: Clear identification and protective shipping solutions.

• Assembly & kitting: Full-service support that reduces supply chain complexity.

For processes performed through trusted partners — including heat treating, plating, and advanced testing (NDT, passivation, ultrasonic inspection) — OSP manages every detail to maintain quality control and ensure compliance.

Continuous Improvement

Quality at OSP is not static — it evolves with every part we produce. Our culture of continuous improvement means we are always refining processes, adopting new technology, and training our workforce. Feedback loops, data-driven decisions, and employee accountability drive us to improve efficiency and reduce variability.

This commitment ensures OSP remains a leader in precision contract manufacturing, ready to meet the demands of industries where failure is not an option.

Why OSP Quality Matters

When you choose OSP, you gain more than a supplier — you gain a partner invested in your success. Our customers trust us because we deliver:

• Certified quality systems (ISO & ITAR)

• First Article, in-process, and final inspections

• Rigorous material testing and traceability

• Proven machining expertise across metals and plastics

• Employee-owned accountability and pride

• Reliable delivery of parts that meet demanding standards

For industries such as aerospace, automotive, defense, medical, and industrial manufacturing, OSP provides the peace of mind that every part is built to last.

Partner with OSP

At OSP, we believe quality is the measure of trust. That’s why we put the same care into every order, no matter the size or complexity. From raw material selection to first article approval to final inspection, our processes ensure that your components meet the highest standards of precision and reliability.

Contact us today to learn how OSP’s quality-first approach can support your next project with certified excellence.