Associated Spring Raymond 204-504 Die Spring 1 in Blue

Product Description

The ASSOCIATED SPRING RAYMOND 204-504 is a heavy-duty die spring designed for use in metal stamping dies, molds, and tooling fixtures. Built from chromium alloy steel with a trapezoidal wire profile, it delivers a consistent spring rate of 839.39 N/mm across a 1-inch (25 mm) free length. The blue color coding identifies this spring within the standard ISO 10243 classification system, indicating its load range relative to other die spring grades. Tool and die makers, mold builders, and press maintenance technicians install this part as a stripping spring, return spring, or pressure pad component in production tooling.

This spring is suited for light- to medium-duty stamping and molding applications in both production and prototype tooling environments. With a hole diameter of 25 mm and a rod diameter of 12.50 mm, it fits standard die set pockets conforming to ISO 10243 specifications. It is commonly used in progressive dies, single-station dies, and injection mold assemblies where repeatable deflection and load consistency are critical to part quality and tool life.

Key Features

• Trapezoidal wire cross-section for higher load capacity relative to round wire springs of the same envelope size
• Blue color coding per ISO 10243 standard for quick identification of load class in the field
• Chromium alloy steel construction provides durability and fatigue resistance under cyclic loading
• Maximum deflection of 9.40 mm with a corresponding travel-to-solid load of 1381.80 N
• Certified to ISO 9001:2008, ISO/TS 16949:2009, and registered with TUV Rheinland for quality traceability

Compatibility

Designed as a replacement or new-installation die spring conforming to ISO 10243 specifications, suitable for standard 25 mm hole diameter die set pockets requiring a 1-inch free length blue-class spring.

Installation Notes

Installation is performed by tool and die makers or press maintenance technicians during die build or tooling maintenance. Ensure the die pocket bore and guide rod dimensions match the 25 mm hole diameter and 12.50 mm rod diameter before installation. Never exceed the rated maximum deflection of 9.40 mm, as operating beyond solid height will shorten spring life significantly and may cause premature failure. De-energize and lock out the press before performing any die maintenance involving spring replacement.