Associated Spring Raymond 204-410 Die Spring 2.5 in Blue

Product Description

The ASSOCIATED SPRING RAYMOND 204-410 is a heavy-duty die spring designed for use in metal stamping, die sets, and press tooling applications. Built from chromium alloy steel, it features a trapezoidal wire cross-section that delivers consistent spring rates and extended fatigue life under cyclic loading. The free length measures 2.5 inches (64 mm), with a maximum deflection of approximately 0.94 inches (24 mm) and a spring rate of 184.44 N/mm. The blue color coding identifies the load class, allowing toolmakers and die shop technicians to quickly sort and select springs during setup and maintenance.

This die spring is suited for use in progressive dies, blanking dies, forming tools, and other press tooling found in manufacturing and metalworking environments. It is a standard metric-series die spring per ISO 10243 and is commonly installed by tool-and-die makers, press operators, and industrial maintenance technicians. The 20 mm hole diameter and 10 mm rod diameter dimensions make it compatible with standard die set components designed to those metric specifications.

Key Features

• Chromium alloy steel construction for durability under high-cycle press loads
• Trapezoidal wire shape provides higher load capacity per unit length compared to round wire
• Blue color coding indicates load class for quick field identification
• Conforms to ISO 10243 standard for metric die springs
• Manufactured under ISO 9001:2008 and ISO/TS 16949:2009 certified quality systems
• TUV Rheinland registered and ANAB accredited production

Compatibility

Designed as an ISO 10243 standard metric die spring with a 20 mm hole diameter and 10 mm rod diameter, suitable for use in die sets and press tooling built to those specifications.

Installation Notes

Die spring installation and replacement should be performed by qualified tool-and-die makers or industrial maintenance technicians with the press de-energized and all stored energy safely released. Springs should be seated squarely against the retaining pocket or plate with the rod centered within the spring bore to prevent side loading. Never mix springs of different color codes or load classes within the same die set. Inspect mounting pockets and guide rods for wear or damage before installing a replacement spring.