Precision Brand 21035 Music Wire Coil 15 Gauge 0.035 in 306 Ft

Product Description

The PRECISION BRAND 21035 is a tempered high carbon steel music wire coil used in spring fabrication, mechanical assemblies, and precision tension applications. At 15 gauge, the wire measures 0.035 inches in diameter and runs 306 feet per coil, giving technicians and fabricators a full working supply on a single spool. The wire is manufactured to ASTM A228 standards, which specifies high-carbon steel wire intended for mechanical spring and dynamic load applications. Its tempered condition delivers consistent tensile strength and elasticity across the length of the coil, making it suitable for repeated flex and load cycles without premature fatigue.

This wire coil is used in industrial maintenance, equipment repair, and custom spring fabrication across mechanical trades. It is appropriate for both shop-bench work and field service applications where a reliable, uniform-diameter spring wire is needed. At 306 feet per coil, the 21035 supports multiple projects from a single unit. Applications include forming compression springs, extension springs, and wire-form components in HVAC equipment, machinery, and general mechanical assemblies. The coil ships as a single unit with a package quantity of one.

Key Features

• ASTM A228 compliant high carbon steel construction for consistent mechanical spring performance
• Tempered condition provides uniform tensile strength and fatigue resistance across the full coil length
• 0.035 inch diameter at 15 gauge for precise fitment in spring-forming and wire-form applications
• 306-foot coil length reduces the need for frequent resupply on larger jobs
• Single-coil packaging with a minimum order quantity of one

Compatibility

Designed as a general-purpose tempered music wire coil suitable for mechanical spring fabrication and wire-form applications requiring ASTM A228 high carbon steel at 15 gauge and 0.035 inch diameter.

Installation Notes

Working with spring wire requires appropriate personal protective equipment including cut-resistant gloves and eye protection due to the stored energy and sharp cut ends produced during forming. Use proper wire-forming tools and bending fixtures to maintain consistent geometry and avoid stress concentrations. Cutting should be performed with quality wire cutters or shears rated for high-carbon steel to prevent burring. Secure the free end of the coil during unwinding to prevent uncontrolled release.