Gardner Spring GT3518709-ML Torsion Spring 90 Deg

Product Description

The GARDNER SPRING GT3518709-ML is a left-hand wound torsion spring designed for light-duty mechanical assemblies where controlled rotational force is required. Built from steel with a 0.035 inch wire diameter and a 0.315 inch outside coil diameter, this spring delivers 1.071 inch-pounds of torque at full leg length. It features 3.25 coils and a 90-degree deflection angle, making it well suited for compact pivot mechanisms, door latches, hinges, and similar applications. Maintenance technicians and mechanical assemblers working with small equipment or component subassemblies are the typical installers.

This torsion spring is used in residential and light commercial mechanical assemblies where a left-hand wind orientation and a 90-degree deflection angle are specified. The 0.187 inch rod size and 0.187 inch maximum tool size make it compatible with standard small-diameter mandrel tooling. With a 1.250 inch leg length and 3.25 active coils, it fits into space-constrained installations requiring consistent return torque. Sold in packages of 6 units per the supplier packaging specification.

Key Features

• Left-hand wind direction for applications requiring counterclockwise torsional force
• 90-degree deflection angle for precise rotational positioning
• 0.315 inch outside coil diameter suits compact mounting envelopes
• 0.035 inch wire diameter with 3.25 coils for consistent spring rate
• 1.071 inch-pounds torque at rated leg length
• Steel construction for durability in mechanical assemblies

Compatibility

Designed as a direct replacement torsion spring for mechanical assemblies specifying a 0.187 inch rod size, 0.315 inch coil outside diameter, 0.035 inch wire diameter, left-hand wind, and a 90-degree deflection angle.

Installation Notes

Installation should be performed by a qualified mechanical technician familiar with torsion spring preload and winding procedures. Always de-energize or fully relieve any stored mechanical energy in the assembly before removing or installing a torsion spring. Use a mandrel or tool no larger than 0.187 inches to avoid distorting the coil geometry. Verify wind direction against the assembly drawing before installation to prevent reverse torque loading.