The product shown here, a steel plunger cap, which was designed for use within an internal combustion engine, in an automotive application. The parts where constructed of C1018 steel, manufacturing required precision cold heading which we performed on our four station nut former.

This project required both precision and high speed manufacturing in order to maintain the customer’s specifications. The part measured .309″ in length, with an outside diameter of .594″, and an inside diameter of .135″, and featured a natural finish. The customers design specifications required maintaining tolerances of ±.001″, with true positioning of .005″, and perpendicularity of .001″. Quality was maintained with dimensional testing throughout the 6 million part manufacturing run that we perform annually. For more information on this product, see the table below or contact us directly.

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Precision Cold Heading Project Highlights

Product Description

This plunger cap is used within an internal combustion engine application

Precision Cold Heading Capabilities Applied/Processes

Cold Heading

  • Form Plunger Cap to Print
Equipment Used to Manufacture Part

Four Station Nut Former

Overall Part Dimensions

O.D.: Ø.594″
I.D.: Ø.135″
Length: .309″

Tightest Tolerances

True Position of .005
Perpendicularity of .001″

Material Used

C1018 Steel

Material Finish


In process testing/inspection performed

Dimensional Inspection

Industry for Use



6,000,000 Per year

Delivery Location

Aguascalientes, Mexico

Standards Met

Customer supplied print, 2D CAD Drawing

Product Name

Steel Plunger Cap

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