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High Precision Screw Machining of Aluminum Knurled Threaded Knobs for the Electronics Industry

Elge Precision Machining, Inc. was contracted by an electronic parts manufacturer in need of a reliable manufacturer for aluminum knurled knobs. Used within a custom application, these knobs needed to be produced accurately and economically in large volumes. We decided that a screw machining approach would be best for satisfying these goals.

Our single spindle Brown & Sharpe screw machines were retained for production of the knobs. Individual fabrication processes included rough turning, drilling, form turning, counter boring, trepanning, thread rolling, and knurling. 6061-T6 Aluminum was specified as the build material. Tolerances were held at ±0.001”, with 32 RMS finishing placed on most surfaces. All completed parts were subject to dimensional and fit tests before being individually packaged and shipped out on lead times of 4-5 weeks.

The customer was very pleased with the results of our manufacturing approach. Parts were machined well within the tolerances requested, on time, and without any interruption to the customer’s existing work flow. To learn more about this project or what else Elge Precision Machining has worked on, see the table below and contact us today.

Aluminum Knurled Threaded Knobs Project Highlights

Product Description
Aluminum Knurled Threaded Knob
Capabilities Applied/Processes
Screw Machining
  • Rough Turning
  • Drilling
  • Form turning
  • Counter Bore
  • Trepanning
  • Thread Rolling
  • Knurling

Turning – 0.001 Repeatability

Equipment Used to Manufacture Part
Browne & Sharpe Screw Machines
Overall Part Dimensions
O.D: 1.000”
Length: 1.000”
Tightest Tolerances
+ 0.001”/-0.001
Material Used
6061-T6 Aluminum
Material Finish
Surface Finish: 32 RMS
In process testing/inspection performed
100% Dimensional Inspection, Visual Inspection, Fitment
Additional Facts
Each part was individually packed in Ziploc bags
Industry for Use
Electronic Parts Manufacturer
1,000 Sets per Year
Delivery/Turnaround Time
4 – 5 Weeks
Delivery Location
Reading, PA
Standards Met
Customer Specifications, 2D CAD Drawing
Product Name
Aluminum Knurled Threaded Knob

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