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PennEngineering has enjoyed a sustained history as a global leader in the fastening industry since our founding in 1942. PEM®, the company’s leading brand has been recognized as the premier product in the thin sheet fastening industry for over 75 years. Today, our expanding portfolio of fastener designs and technologies continues to keep pace with the challenges presented by an ever-evolving marketplace.

Our solutions and engineering expertise benefit from ongoing investment in research, new product development, and strategic locations around the world. Our customers gain the benefits accrued from our worldwide presence grounded in “local” access and, as a result, we remain the “go-to” fastening resource for virtually every industry, including the electronics and computer, data/telecom, medical, automotive, marine, aerospace/avionics, and general manufacturing categories. No challenge is too big or too small.

PennEngineering is strongly supported by manufacturing and technical facilities in the United States, Europe, and Asia and a global network of authorized engineering representatives and distributors. All are well-equipped to deliver timely and reliable solutions wherever and whenever required.

The idea that revolutionized production fastening

kaWhen K.A. Swanstrom founded Penn Engineering & Manufacturing Corp. in 1942, he did so with a revolutionary new product: an easy-to-install, self-clinching fastener that provides load-carrying threads in metal sheets too thin to be tapped. At first, Mr. Swanstrom produced his innovative design with four machines in a Doylestown, Pennsylvania garage. This simple operation soon gave way to a modern facility in Danboro, Pennsylvania because manufacturers and engineers alike recognized the benefits of self-clinching fasteners. They not only reduced time, labor, weight and inventory on many assembly jobs, but they also opened up a whole new world for engineers and designers, making a wide assortment of thin-metal designs possible for the first time.

Industry-wide acceptance led to earnest production of self-clinching fasteners shortly after World War II. As industry’s need to hold together ultra-thin and ultra-light metals grew, so did the product line. Over the years the original self-clinching fastener design was modified to meet hundreds of new design applications.
Click here to view Company History.

Brands and Products

Our established and respected brands effectively define our experience and capabilities, as well as the underlying reasons for our successful relationships with our valued customer partners.

PEM® brand fasteners utilize self-clinching, broaching, flaring, surface mount, or weld technology to provide strong, reusable, and permanent threads and mounting points in thin sheet metal or P.C. board materials.

microPEM® fasteners are ideal for today’s compact electronics. Applications include; wearables such as smart watches, laptops, notebooks, tablets, smart phones and hand held devices.

Haeger® manufactures hardware insertion machines. They are the world leader in the development of innovative fastener insertion technology solutions. For nearly 40 years, Haeger has pioneered and manufactured machines and tooling systems for inserting nearly every type and size of self-clinching fastener imaginable.

PEMSERTER® presses are designed to safely, reliably, accurately, and quickly install PEM fasteners. No matter how complex or simple an installation challenge may be, using the PEM fastener and PEMSERTER press system will provide you with quality results.

Heyco® Products designs and manufactures molded wire protection products, plastic fasteners, molded components and stamped electrical components to meet the needs of industrial, medical, appliance, transportation, alternative energy, lighting, and aerospace companies. Heyco brings with it a modern, globally certified, U.S.-based manufacturing facility with vast expertise in injection molding, progressive stamping, over molding, and assembly processes and techniques.

ATLAS® brand rivet nuts and tools provide strong and reusable permanent threads in sheet materials where only one side is accessible.

PROFIL® As a part of the specialty mechanically attached fasteners line of fasteners, PENNAutomotive’s PROFIL® high performance fasteners are permanently and securely attached to metal parts or panels by means of a riveting, piercing or pressing process. PENNAutomotive designs and manufactures automated feeding equipment for in die press shop applications and assembly line solutions to meet the individual production requirements of its PROFIL customers.

PennAuto™ fastener products offer a unique manufacturing and distribution methodology based on manufacturing of high strength components and fasteners in PennEngineering’s wholly owned manufacturing subsidiaries in Kunshan China, supported by sales, product inventory, distribution services and customer technical assistance strategically located in close proximity to its global customers.

SI® brand inserts employ press-in, molded-in, or heat/ultrasonic installation methods to provide strong, reusable, permanent threads in plastic materials.

The STICKSCREW® system is a unique small screw installation system which eliminates expensive screw handling equipment and loose hardware. The screws are tightened to an exact torque as determined by the stick/screw design.

Global Capabilities

Application Engineering Services / Representatives

From our factories or in the field we can provide you with application analysis/review, 3D modeling, product samples, on-site training and total engineering support.

CSI™ (Cost Savings Investigation)

The PEM® Cost Savings Investigation program was developed to help companies attain a lower “assembled cost” for their designs. You can put our global fastening expertise to work for you by allowing our CSI team to disassemble and carefully analyze your product. Our CSI team will then make recommendations to you on how to reduce fastener costs, assembly time and/or assembly steps. Click here to read more.

Comprehensive Website

Our fastening resource center provides the tools to help you determine which type fastener or installation equipment is right for you. It includes a complete CAD library, fastener selector tool, conversion tables, tutorials/animations, literature, tech help, and environmental compliance references.

Social Media Activity

PennEngineering is actively posting updates and videos on Twitter, youTube, LinkedIn, and Google+.

PEMLINE Newsletter

This publication highlights new products, web updates, technical tips and other news from our Company.
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PEMspec™ free iPhone/iPad/Android app

Available at the iTunes store or Google Play store, PEMspec™ is a free app that allows users to quickly lookup critical installation dimensions for a selected PEM® fastener.

Custom Designs

Our engineers can assist you in finding the most efficient solution to your application, and design the right fastener to meet your needs.

Installation Equipment

We can assess your application and recommend equipment that helps you achieve your lowest installed cost. Systems can be developed to handle multiple fastener types simultaneously to address challenging component handling and fastener installation.

Prototype Development

We’re equipped with the latest equipment to provide prototype samples and short run production quantities for your testing and analysis.

Technical Lab

We have comprehensive testing facilities in each of our manufacturing locations. Tests include mechanical testing, tensile strength, compression, in sheet performance, micro hardness (Knoop, Rockwell and superficial), thermal cycling, image analysis, and corrosion and plating issues and analysis.

Technical Support

Email our Technical Support Team with a question at your convenience.

Global Quality & Compliance

At PennEngineering, our goal is 100% defect-free product. To this end, we have adopted a global manufacturing strategy of defect prevention rather than defect detection. We use statistical tools throughout our manufacturing processes to monitor the performance and assure effective quality control of each process step. If a non-conforming situation arises, it is resolved immediately with the use of appropriate quality assurance tools.

Click here to view a complete listing of our global quality certificates.

Click here to view our Sustainability Policies (includes environmental statements / government compliance / UL certification.)

RoHS Compliance

The majority of part numbers are compliant with the current revision of the European RoHS directive (2002/95/EU). We are committed to helping our customers select RoHS compliant products and offer this general statement regarding compliance of our fasteners to the RoHS directive. To check status of specific product types go to the Product Compliance Lookup on our website. If compliance certification on specific part numbers is needed, we can supply such certification if a list of our part numbers is supplied. Submit your request to [email protected].

Industries Served

  • Aerospace/Aircraft
  • Appliances
  • Automobiles
  • Compact Electronics
  • Consumer Electronics
  • Food Service Equipment
  • Furniture/Fixtures/Signs
  • Industrial Equipment
  • Lawn/Garden Equipment
  • Lighting
  • Marine/Boating
  • Medical
  • Military
  • Recreational
  • Telecom
  • Trucks/Trailers