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Fabricated Low Carbon Steel Electrical Adjusting Screw

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A customer in the electrical industry contracted EPS Engineered Parts Sourcing Inc to design and fabricate a custom screw for a unique plastic application. We began to work designing the tooling and process necessary to precisely manufacture this part within the budget and specifications of the client. Utilizing our 2 die 3 blow Nakashimada Cold Former, low carbon steel was manipulated to form the unit, and a Re-Heading Cold Former was used to form the collar - a faster and less wasteful method than shaving. Tight tolerance of ±.005" was maintained for the head diameter. Using our 10-400 National Roll Threader, the unit was threaded using the right amount of pressure to ensure the long skinny piece did not warp or bend. The part was finished with Zinc 5µm and sorted using an automated camera sorting method to detect bending and other unwanted defects.

The finished dimensions for this fastener are 8-15 x 3.02mm. We produce this fastener at a high volume rate of 1,200,000 pieces per year, shipping to our client in Tennessee. This project illustrates our ability to cold form specialized parts and adapt our current equipment lines to manufacture to atypical specifications. Typical turnaround time for a project of this sort is 8-10 weeks. For more about this custom fastener process or our other capabilities, please see the table below or contact us directly.

Highlights from this Cold Formed Fastener Project

Product Description
Special application in Electrical Box Mounts
Cold Forming Capabilities Applied/Processes
Primary:
Process Design/Development
Engineering
  • Tooling Design
Cold Forming
  • Re-Heading
Roll Forming - Threads
Equipment Used to Manufacture Part
  • 2 die 3 blow Nakashimada Cold Former
  • Re-Heading Cold Former
  • 10-400 National Roll Threader
Overall Part Dimensions
#8 - 15 x 3.02
Tightest Tolerances
Head Diameter tolerance of ± 0.005
Material Used
1022
Material Finish
Zinc 5µm
In process testing/inspection performed
Automated Camera Sorting
Industry for Use
Electrical
Volume
1,200,000 pcs per year
Delivery/Turnaround Time
8 - 10 weeks
Delivery Location
Tennessee
Standards Met
Customer Specifications, 2D CAD Drawing
Product Name
Fastener (EPS Part # SOWI-2)

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