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The ASSOCIATED SPRING RAYMOND 203-308 is a heavy-duty die spring designed for use in stamping dies, molds, and other precision tooling applications where consistent, repeatable force is required. This spring features a trapezoidal wire cross-section, which maximizes the load-bearing surface area within a given envelope and delivers higher energy storage compared to round-wire designs. With a free length of 2 inches (51 mm) and a spring rate of 89.65 N/mm, the 203-308 is engineered for moderate-to-high load applications. The green color designation indicates its load classification within the ISO 10243 standard series. Toolmakers, die setters, and industrial maintenance technicians are the primary installers of this component.
This die spring is suited for use in metal stamping dies, injection molds, progressive dies, and fixture assemblies across both light manufacturing and heavy industrial environments. The 8 mm rod diameter and 16 mm hole diameter allow straightforward drop-in fitment into standard ISO-dimensioned die sets. It is appropriate for applications requiring controlled deflection up to 20.90 mm at maximum travel-to-solid load.
Designed as an OEM-style replacement or direct fitment for standard ISO 10243 die spring applications requiring an 8 mm rod diameter, 16 mm hole diameter, and 2 inch free length in the green load classification.
Die spring installation and replacement should be performed by qualified toolmakers or die maintenance technicians with the press or tooling fully de-energized and locked out per OSHA lockout/tagout procedures. Inspect the mating rod and bore dimensions before installation to confirm proper clearance. Never grind or alter the spring body, as this compromises heat treatment and fatigue life. Replace springs in matched sets when possible to maintain even load distribution across the die assembly.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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