Industrial C1225-148-1250-M Compression Spring

Associated Spring's C1225-148-1250-M compression spring is a precision music-wire coil designed for compact, axial-load applications. It uses a 1.225-inch outside diameter (31.12 mm), a 0.148-inch wire diameter (3.76 mm), and a free length of 1.250 inches (31.75 mm). The published spring rate is 34.81 N/mm, providing stable stiffness under load, while the arrangement is cataloged as C1225-148-1250-M and carries the internal reference #256510. This configuration is intended for mechanical assemblies where space is at a premium and a defined preload across a short stroke is required. The data reflect the standard geometry and performance characteristics for this size class from Associated Spring, enabling engineers to accurately match BOMs or procure a like-for-like replacement with confidence. With an outside diameter of 1.225 inches and a 0.148-inch wire, it sits in the mid-range of compact springs, balancing load capacity with a small footprint.