Business Details
46 Years
experience
Your Trusted Partner for Metal Finishing Solutions
Since 1980, Superiorwholesale Distributors has established itself as a leader in metal finishing and fastener sorting, delivering precision-engineered solutions to meet evolving industry demands. Our expertise spans black oxide, passivation, phosphating, and dip spin coatings, supported by cutting-edge sorting capabilities for fasteners and stampings. With a 200,000 sq. ft. facility operating three shifts daily, we combine decades of technical knowledge with ISO-certified processes to ensure consistent quality and reliability. Our team of over 200 professionals adheres to rigorous environmental standards, maintaining ISO 14001 certification as the first U.S. company to achieve this benchmark. We prioritize customer satisfaction through tailored service, rapid turnaround times, and a commitment to exceeding industry specifications.Our technical specialists possess deep expertise in corrosion resistance, surface preparation, and precision sorting for automotive, aerospace, and manufacturing sectors. Continuous investment in advanced equipment ensures we meet exacting tolerances for both small-batch and high-volume orders. Transparency in operations and documentation guarantees full traceability for quality assurance. Our environmental stewardship program reduces waste and energy consumption while maintaining compliance with federal and state regulations. This combination of technical excellence, operational scale, and sustainability leadership positions us as a trusted partner for critical finishing applications.
Services
Black Oxide
Passivation
Phosphating
Dip Spin Coatings
Fastener Sorting
Metal Finishing
Plating Capabilities
Sorting Machines
Packaging
Environmental Compliance
Details
- Year established: 1980
Highlights and features
- We pioneered ISO 14001 certification in U.S. metal finishing
- Largest Black Oxide facility in the Continental United States
- 25+ years specializing in Black Oxide finishing techniques
- Three-shift operations ensure rapid turnaround for urgent orders
- Environmental management system exceeds regulatory compliance standards
Associations and certifications
- ISO 9001:2015
- ISO 14001:2015
- ISO 17025
Services
Black Oxide
Our black oxide finishing creates durable corrosion-resistant surfaces on ferrous metals. This chemical conversion process forms a protective magnetite layer that enhances wear resistance while maintaining dimensional stability. Industries rely on our black oxide treatment for screws, bolts, and precision components requiring both functional protection and aesthetic finish.
Dip Spin Coatings
Dip spin application provides uniform protective coatings on fasteners through controlled immersion and centrifugal force. We use advanced polymer formulations to achieve precise thickness control while maintaining thread integrity. This process ensures consistent coverage for complex geometries in high-volume production runs.
Fastener Sorting
Our automated sorting systems categorize fasteners by size, type, and specification using optical recognition and mechanical separation. This service reduces inventory errors and streamlines production workflows for manufacturers requiring just-in-time delivery systems with guaranteed part traceability.
Passivation
Passivation removes surface contaminants from stainless steel components through controlled acid exposure. Our process creates a protective oxide layer that enhances corrosion resistance while preserving material integrity. This critical treatment meets aerospace and medical industry standards for precision-engineered parts.
Phosphating
Phosphating creates a micro-porous surface layer that improves paint adhesion and corrosion protection. Our zinc and manganese phosphate treatments form durable base layers for subsequent coatings while providing moderate lubricity for forming operations in automotive manufacturing applications.
Questions
What metal finishing services does SWD offer?
We provide black oxide, passivation, phosphating, and dip spin coating services for industrial fasteners and stamped components.
Are your processes ISO certified?
Yes, we maintain ISO 9001, ISO 14001, and ISO 17025 certifications for quality and environmental management.
How does your fastener sorting work?
Our automated systems sort fasteners by size, type, and specification with 99.9% accuracy for efficient inventory management.
Do you handle large volume orders?
Our 200,000 sq. ft. facility operates three shifts daily to accommodate high-volume production requirements.
What industries do you serve?
We support automotive, aerospace, construction, and general manufacturing sectors with precision finishing solutions.
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