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Quality Control

Tengco’s approach to quality control is designed to ensure optimal product quality, strict adherence to your design, and a reduced cost to you.

From first article sample submission all the way through to full production, our QC staff is always on the lookout for ways to improve product quality.

We are constantly addressing manufacturing processes, material concerns, and improving staff expertise to ensure the highest quality product.

We can provide:

  • Dimensional Testing
  • Mechanical Testing
  • Tolerance Analysis
  • Tooling Life Analysis
  • Rockwell Hardness Testing per ASTM E18
  • Brinell Hardness Testing per ASTM E10
  • Magnetic Particle Testing per ASTM E1444
  • Tensile/ Proof Load Testing up to 160,000 lbs (700kN)
  • Hot Dip Galvanizing Plating Thickness per ASTM E376
  • Torque Testing
  • Roughness Testing
  • 5 Year Sample Retention


 Quality Control for Custom Manufacturing |Tengco, Inc.

Tengco is ISO 9001:2015 Certified Through our Midwest Distribution Center

Each stateside and international distribution center has a full inspection lab with in-house testing equipment in full accordance with NIST standards.
Perry Johnson Registrars, Inc. recognizes organizations for their quality management system’s integrity.

" Tengco monitors our factories so you don't have to. We check quality control overseas and then double check when your product gets to our stateside distribution centers. "


How Can Tengco Help You?

Tengco is a hardware distributor that provides global sourcing solutions for custom manufacturing.  We provide world class global sourcing, service and distribution.

Tengco is the perfect solution to your global sourcing needs.  We can provide anything from standard nuts and bolts to specialty fasteners, castings, forgings and stampings

We have been working with our customers for over 35 years to develop custom metal components for a wide variety of industries and applications.

Tengco is ISO 9001:2015 Certified through our midwest distribution center and the combination of our experienced engineering team, quality control team, logistics team, customer service representatives and sales staff can help your organization maintain the highest standards for your custom parts.

Tengco supplies customers throughout the United States, Canada, Mexico, South America, Europe and Asia and we can’t wait to speak to you about how we can help your organization.

Quality Control Saves You Money

See how Tengco’s quality control staff can ensure optimal product quality and a reduced cost to you.

Contact us at 714-676-8200