Associated Spring Raymond 204-306 Die Spring 1.5 in Blue

Product Description

The ASSOCIATED SPRING RAYMOND 204-306 is a heavy-duty die spring engineered for use in stamping dies, molds, and press tooling. It features a trapezoidal wire cross-section, which increases load capacity and fatigue life compared to round-wire designs. The spring has a free length of 1.5 inches (38 mm), a rod diameter of 8 mm, and a hole diameter of 16 mm. Constructed from chromium alloy steel and color-coded blue, it carries a maximum deflection load of 488.20 N at a maximum deflection of 14.40 mm, with a spring rate of 193.57 N/mm. This part is installed by toolmakers, die maintenance technicians, and precision press operators.

The 204-306 die spring is suited for precision die and mold applications in industrial manufacturing environments. The blue color designation indicates a medium load classification under ISO 10243, making it appropriate for moderate-force press and stamping tooling. It fits standard die set configurations accepting an 8 mm rod and a 16 mm hole, and it is commonly used in metal stamping, plastic injection mold tooling, and fixture applications where consistent spring return force is required.

Key Features

• Trapezoidal wire shape increases load capacity and extends fatigue life over round-wire alternatives
• Free length of 1.5 inches (38 mm) with a maximum deflection of 14.40 mm
• Spring rate of 193.57 N/mm for predictable, repeatable force output
• Blue color coding indicates medium load class per ISO 10243
• Chromium alloy steel construction for durability under high-cycle press conditions
• Manufactured under ISO 9001:2008, ISO/TS 16949:2009, and TUV Rheinland registration

Compatibility

Designed as an OEM-style replacement for standard ISO 10243 die springs with an 8 mm rod diameter and a 16 mm hole diameter in medium-load blue classification applications.

Installation Notes

Die spring installation and replacement should be performed by qualified toolmakers or die maintenance personnel with the press fully de-energized and all stored energy released. Ensure the rod and hole dimensions match the spring specifications before seating. Do not compress the spring beyond its rated maximum deflection of 14.40 mm during installation or operation. Inspect the seating surfaces for wear or damage before installing a replacement spring.