CAPABILITIES Screw Machining Precision CNC Machining Tool & Die Design
and Manufacturing
PAST PROJECTS CNC Machining of a Rear End
Differential Ring for the Heavy
Duty Construction Vehicle
Precision Screw Machining
of Steel Bleeder Screws
for an Automotive Application
CNC Machining of a Brake
Drum for the Commercial
Vehicle Industry
Screw Machining of Flanged
Inserts for the Automotive
Screw Machine Production
of Flare Nuts for the
Automotive Industry

Screw Machine Production of Flare Nuts for the Automotive Industry

Screw Machining of Steel Flare Nuts for the Automotive Industry

Madison Tool & Die, Inc. was approached by an automotive industry customer in search of high quality screw machining service. The flare nuts required by this customer are a common request for us; we make many fasteners in medium to high volume range for the auto industry, including four other "brother" fasteners very similar to this (same family). This product offered the particular challenge of needing to be able to withstand a 72-hour salt spray.

After careful analysis, we determined we could meet the customer's needs through application of a zinc chromate plating finish. Our 6 spindle screw machine crafted these 13mm x 17mm hex flare nuts to a tightest tolerance of ±0.0005". We currently ship 30,000 12L14 steel flare nuts per week to this Midwestern customer, for a projected total of 1,560,000 units annually.

To learn more about this flare nut screw machining and zinc chrome plating project for the automotive industry, or our other products and services, please contact Madison Tool and Die.

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Highlights of this Flare Nut Screw Machining Project Specifications

Quality Screw Machining These flare nuts are used on automotive applications.
Steel Screw Machining Capabilities Applied/Processes
Screw Machining
  • Turning Thread Diameter
  • Threading
  • Center Drill
  • Drill
  • Cutoff
Zinc Chromate Plating
Equipment Used to Manufacture Part 6 spindle screw machine
Overall Part Dimensions Length: 13mm
Tightest Tolerances ± 0.0005"
Material Used 12L14 Steel
Hex: 17mm
Material Finish Zinc Chromate Plated
  • withstands 72 hour salt spray
In process testing/inspection performed Ck pitch dia, major and minor thread dia, all lengths and hole dia.
Industry for Use Automotive Industry
Volume 30,000 per week
Project Scope: Annual Production of 1,560,000 Units
Delivery/Turnaround Time 3 weeks
Delivery Location Midwest
Standards Met Customer supplied print
ISO9001 2008 DIN Standards
Product Name Flare Nuts

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