Cylindrical Coil Spring with Heavy Duty Compression Spring and Uniform Coil Pitch

A heavy duty compression spring with wire diameter at the lower tolerance boundary and pitch wound above the design nominal delivers spring rate below the minimum specified; free length error above +1% of nominal shifts the installed pre-load force and changes the operating force window at both maximum and minimum deflection positions in automotive, power tool, and automation applications. Material grade matters: 65Mn carbon steel wire is cost-effective for standard load applications but loses elastic stability above 80°C, while SUS 304 stainless wire maintains spring rate up to 250°C for springs exposed to cleaning cycles or moisture. Dongguan Ruishuo Hardware Electronics (Dongguan, Guangdong, established 2016) manufactures this cylindrical coiled heavy duty compression spring with uniform pitch at their circa 2,000 m² Dongguan facility, with wire diameter, free length, and coil pitch uniformity verified to your drawing requirements during first article review, serving aerospace, medical equipment, and railway applications. Wire diameter, free length, spring rate, and material grade. For a spring price estimate from our dongguan team.