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Tengco supplies many types of stock and custom manufactured small parts from standard fasteners to items that are completely proprietary. We also provide extensive logistics and distribution support along with value-added services such as bar coding, assembly and packaging. Call us now at 714-676-8200 or email us at sales@tengco.com for a quote. We'll show you the advantages and cost savings.

Forging  |  Casting  |  Stamping

Forging    View Product Samples
- Hot Forged Fasteners and Parts
Hot forging offers superior integral strength in comparison to machined forms and also allows a vast number of forms and drive types to be produced including:
  • Hexagon head
  • Square head
  • Round head
  • Penta Head
  • Tee Head
  • Custom Shaped Heads
 - Cold Formed Fasteners and Parts
The key benefits of cold forming are that it is an extremely efficient method of manufacturing, it allows for an infinite number of shapes and it operates at high speed, yielding hundreds of parts per minute. Cold Forming can produce components that normally would not be economical through machining from a solid bar. Also, an assembly with two or more pieces can often be formed as a single piece.

Tengco provides fasteners and small hardware utilizing the following cold forming processes, offering many options and advantages.

    Cold Heading
This process is a very fast method for creating fasteners and parts by using the force of a punch to force the end of a metal blank into a die.
  • One Die, Two-Blow Process
    Rough shapes are provided by the first blow and the final shape is completed by the second blow.
  • Two Die, Three-Blow Process
    This process provides more variety in shapes and increased head ratios than processes that use one die.



Whether your parts specifications ask for forging, cold forming, casting or stamping Tengco will guarantee the best quality at a very competitive price.
    Multiple-Die Forming
This process provides: increased head-to-shank ratio; more original, unusual shapes; more reduction areas; as well as, the opportunity to do away with secondary operations, helping to save both time and money.

    Multiple-Die Progression
This process also forms the final shape in various stages and can be completed in less than one second.

    Multiple-Die Headers
The advantages of this process are the ability to create unusual shapes at high speed with reduced setup times. The process is suitable for runs of all sizes and tight tolerances.

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Casting    View Product Samples
-Sand Casting
The process involves a mold that is formed from a sand mixture followed by pouring molten liquid metal into the mold's cavity. The mold is then cooled until the metal has solidified. It is the most widely used process for manufacturing fasteners and parts. The accuracy of the casting is limited by the type of sand and the molding process. Sand castings made from coarse green sand which impart a rough texture on the surface of the casting, which makes them easy to identify. Air-set molds can produce castings with much smoother surfaces. Surfaces can also be ground and polished.

-Investment Casting
This is one of the oldest known metal-forming techniques. This casting method allows for the production of components with accuracy, repeatability, versatility and integrity in a variety of metals and high-performance alloys. Lost foam casting is a modern form of investment casting that eliminates certain steps in the process. Investment casting is generally used for small items. It is generally more expensive per unit than sand casting but with lower equipment cost. It can produce complicated shapes that would be difficult or impossible with the sand casting method. It also requires little surface finishing and only minor machining.

-Die Casting
This is is a versatile process for producing engineered metal parts that can produce complex shapes with a high degree of accuracy and repeatability. Die casting is very efficient for high volume mass-produced items. Parts can be as simple as a sink faucet or as complex as a connector housing. Die castings provide integral fastening elements to simplify assembly, such as bosses and studs. Holes can be cored and made to tap drill sizes or external threads can be cast.

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Stamping    View Product Samples
Metal stamping is the manufacturing process whereby a die is used to form sheet metal blanks into a three dimensional shape. Metal stamping is an effective way of producing metal parts at an extremely high rate. The metal stamping dies are placed in presses and each cycle of the press produces a formed part.

Tengco supplies many types of custom manufactured stamped products from standard fasteners and washers to completely proprietary custom parts. We also provide extensive logistics and distribution support along with value-added services such as bar coding and packaging to multiple markets. Tengco specializes in complete component assembly from your parts.

Advantages of Metal Stamping
  • Consistent finish and thickness
  • Consistent tolerances
  • Reduced manufacturing costs
  • Shorter lead times

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