A Series

Flexible Aluminum Set Screw Couplings

The Helical A Series Flexible Aluminum Couplings meet performance demands across a wide range of applications, including drive systems for encoders, instrumentation, lead screws, small pumps, feed rollers, and other light to medium-duty uses requiring torsional flexibility. As Helical’s most popular coupling, the A Series offers an array of options and diameter sizes, allowing customization to fit specific applications. These couplings require no maintenance, accommodate shaft sizes from 3/32” to 3/4”, and are available in 7075-T6 Aluminum Alloy with a set screw attachment.

Showing 31–45 of 112 results

  • AR050-8-3MM Helical A Series Flexible Aluminum Set Screw Couplings

    AR050-8-3MM

    Outside Diameter: 1/2 in
    Length: 1/2 in
    Major Bore: 1/4 in
    Minor Bore: 3 mm

  • AR062-4-4 Helical A Series Flexible Aluminum Set Screw Couplings

    AR062-4-4

    Outside Diameter: 5/8 in
    Length: 5/8 in
    Major Bore: 1/8 in
    Minor Bore: 1/8 in

  • AR062-5MM-5MM Helical A Series Flexible Aluminum Set Screw Couplings

    AR062-5MM-5MM

    Outside Diameter: 5/8 in
    Length: 5/8 in
    Major Bore: 5 mm
    Minor Bore: 5 mm

  • AR062-6-4 Helical A Series Flexible Aluminum Set Screw Couplings

    AR062-6-4

    Outside Diameter: 5/8 in
    Length: 5/8 in
    Major Bore: 3/16 in
    Minor Bore: 1/8 in

  • AR062-6-6 Helical A Series Flexible Aluminum Set Screw Couplings

    AR062-6-6

    Outside Diameter: 5/8 in
    Length: 5/8 in
    Major Bore: 3/16 in
    Minor Bore: 3/16 in

  • AR062-6MM-6MM Helical A Series Flexible Aluminum Set Screw Couplings

    AR062-6MM-6MM

    Outside Diameter: 5/8 in
    Length: 5/8 in
    Major Bore: 6 mm
    Minor Bore: 6 mm

  • AR062-7MM-5MM Helical A Series Flexible Aluminum Set Screw Couplings

    AR062-7MM-5MM

    Outside Diameter: 5/8 in
    Length: 5/8 in
    Major Bore: 7 mm
    Minor Bore: 5 mm

  • AR075-12-12 Helical A Series Flexible Aluminum Set Screw Couplings

    AR075-12-12

    Outside Diameter: 3/4 in
    Length: 3/4 in
    Major Bore: 3/8 in
    Minor Bore: 3/8 in

  • AR075-12-8 Helical A Series Flexible Aluminum Set Screw Couplings

    AR075-12-8

    Outside Diameter: 3/4 in
    Length: 3/4 in
    Major Bore: 3/8 in
    Minor Bore: 1/4 in

  • AR075-16-8 Helical A Series Flexible Aluminum Set Screw Couplings

    AR075-16-8

    Outside Diameter: 3/4 in
    Length: 3/4 in
    Major Bore: 1/2 in
    Minor Bore: 1/4 in

  • AR075-6-6 Helical A Series Flexible Aluminum Set Screw Couplings

    AR075-6-6

    Outside Diameter: 3/4 in
    Length: 3/4 in
    Major Bore: 3/16 in
    Minor Bore: 3/16 in

  • AR075-6MM-5MM Helical A Series Flexible Aluminum Set Screw Couplings

    AR075-6MM-5MM

    Outside Diameter: 3/4 in
    Length: 3/4 in
    Major Bore: 6 mm
    Minor Bore: 5 mm

  • AR075-8-3MM Helical A Series Flexible Aluminum Set Screw Couplings

    AR075-8-3MM

    Outside Diameter: 3/4 in
    Length: 3/4 in
    Major Bore: 1/4 in
    Minor Bore: 3 mm

  • AR075-8-4 Helical A Series Flexible Aluminum Set Screw Couplings

    AR075-8-4

    Outside Diameter: 3/4 in
    Length: 3/4 in
    Major Bore: 1/4 in
    Minor Bore: 1/8 in

  • AR075-8-5 Helical A Series Flexible Aluminum Set Screw Couplings

    AR075-8-5

    Outside Diameter: 3/4 in
    Length: 3/4 in
    Major Bore: 1/4 in
    Minor Bore: 5/32 in

Scroll to Top