Hairspring Fabrication

At IFG Instruments, we use our precision rolling and spring coiling capacities for hair spring fabrication services. Hair springs, flat, coiled wire springs, are used for every analog application: automotive speedometers and tachometers, aircraft speed and altitude indicators, and pressure and temperature gauges. We are able to work with several different metals to suit the electrically-conductive requirement of hair springs: phosphor bronze, beryllium copper, stainless steel, and NiSpan C. We can also produce bimetal coils, made of two different materials welded together, with different expansion rates to indicate temperature or humidity.

Hair springs from IFG Instruments are available in various sizes, wire diameters and coil diameters, with end extensions in configurations including straight, hooked, right angle, or curved. These are delicate parts that make extensive use of our specialty in small-scale, precision manufacturing.

• Automotive speedometers and tachometers
• Aircraft speed and altitude
• Pressure and temperature gauges
• Variety of electrical indication
• Materials: Phosphur Bronze, Beryllium Copper, Stainless Steel, and NiSpan C
• Bimetal coils are also possible to indicate temperature or humidity

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High Spring Fabrication Highlights

Hairsprings

BiMetal Springs