GN 3664 Torque Limiting Three-Lobed Knobs Technopolymer Plastic, with Steel Threaded Stud


Product description


GN 3664 torque limiting three-lobed knobs are used when the manually applied torque is to be set or limited.

When turned clockwise, the torque mechanism of the three-lobed knob triggers an “over-engagement” as soon as the specified torque is reached. When turned counter-clockwise, the mechanism locks up to disable any torque limiting. This ensures that a maximum permissible torque is not exceeded, e.g. when tightening, while the torque required for loosening is always transmitted reliably.


Knob body
Technopolymer (Polyamide PA-HP)
  • Glass fiber reinforced
  • Black, matte finish

Torque mechanism
Steel, hardened

Other components
Steel, blackened finish

Plastic, light gray

RoHS compliant

On request

Other dimensions of threaded studs as per GN 300
Other inserts with special-tipped threaded studs as per GN 306
Other torques
Torque limiting turning counter-clockwise, or turning counter-clockwise and clockwise

Technical drawing

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GN 3664 Technopolymer Plastic Torque Limiting Three-Lobed Knobs, with Steel Threaded Stud sketch

Part Options / Table

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Dimensions in: Inch | Metric
Length ld5d6h1h2Torque ±10%
in Nm
1.97M 80.630.790.981.261.570.530.931.640.42234
1.97M 100.790.981.261.571.970.530.931.640.42234
2.48M 80.981.261.571.972.480.631.111.830.513.244.7
2.48M 100.981.261.571.972.480.631.111.830.513.244.7
3.15M 100.981.261.571.972.480.751.342.210.6645.57.5
3.15M 120.981.261.571.972.480.751.342.210.6645.57.5

Build & Price

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Handle diameter d1
Thread d4
Length l
Torque in Nm

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Total US Dollars (net)
Call / Email for Delivery Time
Please note our quantity discounts (US Dollars).
≥ 250$35.86
Prop 65: Not compliant
Cancer and Reproductive Harm -
RoHS: Compliant
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Weight: 0.164 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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Need Help?

Our service team is available from Monday to Friday between 7:30 AM and 5:00 PM Central Time: 800-877-8351

Special Requests | Contact our sales team

GN 3664-50-M8-40-3GN 3664-50-M10-50-2GN 3664-63-M8-25-3,2GN 3664-80-M10-50-7,5GN 3664-63-M8-50-4GN 3664-50-M10-20-3GN 3664-80-M12-63-7,5GN 3664-50-M10-20-4GN 3664-63-M10-63-4GN 3664-80-M10-40-5,5GN 3664-50-M10-32-3GN 3664-63-M10-50-4,7GN 3664-80-M12-32-7,5GN 3664-50-M8-32-4GN 3664-63-M8-40-3,2GN 3664-63-M8-32-4,7GN 3664-50-M10-25-2GN 3664-50-M10-20-2GN 3664-80-M12-63-4GN 3664-63-M10-32-3,2GN 3664-80-M10-50-4GN 3664-50-M10-25-4GN 3664-80-M10-63-5,5GN 3664-63-M10-25-3,2GN 3664-50-M10-32-4GN 3664-63-M8-50-3,2GN 3664-80-M12-40-5,5GN 3664-63-M10-40-3,2GN 3664-50-M10-40-4GN 3664-50-M8-25-3GN 3664-63-M10-32-4,7GN 3664-80-M10-32-7,5GN 3664-63-M8-32-3,2GN 3664-80-M12-50-7,5GN 3664-80-M12-40-4GN 3664-50-M10-40-2GN 3664-50-M8-40-4GN 3664-80-M12-25-7,5GN 3664-63-M10-25-4,7GN 3664-50-M10-50-4GN 3664-80-M10-25-7,5GN 3664-50-M10-40-3GN 3664-80-M10-63-7,5GN 3664-80-M10-40-4GN 3664-63-M10-25-4GN 3664-80-M12-50-4GN 3664-63-M10-40-4,7GN 3664-50-M8-20-3GN 3664-80-M10-32-4GN 3664-63-M8-40-4,7GN 3664-63-M10-63-3,2GN 3664-63-M8-32-4GN 3664-80-M12-50-5,5GN 3664-50-M10-50-3GN 3664-63-M10-50-3,2GN 3664-50-M10-25-3GN 3664-63-M8-63-3,2GN 3664-80-M10-40-7,5GN 3664-63-M8-63-4,7GN 3664-50-M8-25-4GN 3664-63-M10-40-4GN 3664-50-M8-16-4GN 3664-50-M8-16-3GN 3664-80-M12-40-7,5GN 3664-50-M8-40-2GN 3664-50-M8-32-2GN 3664-80-M10-25-5,5GN 3664-63-M8-50-4,7GN 3664-63-M8-25-4,7GN 3664-50-M10-32-2GN 3664-50-M8-32-3GN 3664-50-M8-25-2GN 3664-63-M8-40-4GN 3664-50-M8-16-2GN 3664-63-M8-63-4GN 3664-80-M10-32-5,5GN 3664-63-M10-63-4,7GN 3664-80-M12-32-4GN 3664-80-M12-25-5,5GN 3664-63-M10-50-4GN 3664-80-M10-63-4GN 3664-80-M10-25-4GN 3664-50-M8-20-4GN 3664-80-M12-25-4GN 3664-80-M12-63-5,5GN 3664-63-M8-25-4GN 3664-80-M10-50-5,5GN 3664-63-M10-32-4GN 3664-80-M12-32-5,5GN 3664-50-M8-20-2

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