Precision Brand 21047 Music Wire Coil 21 Gauge 170 Ft

Product Description

The PRECISION BRAND 21047 is a 21-gauge tempered music wire coil made from high carbon steel, supplied in a 170-foot length. Music wire of this type is drawn and tempered to deliver consistent tensile strength and spring-back characteristics across the coil. At 0.047 inches in diameter, this wire is well suited for applications requiring tight dimensional tolerances and reliable elastic performance. It meets ASTM A228 standards, which govern the mechanical properties of high-quality carbon steel music wire. The coil ships at approximately 1.05 pounds and is packaged as a single unit.

This wire coil is used across a wide range of mechanical and fabrication applications where consistent diameter and temper are critical. Typical uses include spring fabrication, wire forms, light mechanical assemblies, and general maintenance shop work. It is commonly stocked by HVAC and mechanical contractors for forming small tension and compression springs during equipment repairs, as well as by industrial maintenance teams for custom wire-form fabrication.

Key Features

• High carbon steel construction tempered to ASTM A228 for consistent tensile and spring properties
• 21 gauge at 0.047 inches diameter for precise fitment in small-form spring and wire applications
• 170-foot coil length provides substantial working stock from a single package
• ASTM A228 compliance ensures standardized mechanical performance expectations
• Single-coil packaging with an MOQ of 1 for flexible purchasing

Compatibility

Designed as a general-purpose high carbon steel music wire coil suitable for spring fabrication, wire-form production, and mechanical repair applications requiring ASTM A228-compliant 21-gauge wire.

Installation Notes

Cut and form music wire using appropriate safety gloves and eye protection, as cut ends are sharp and the wire stores significant spring energy. Use proper wire cutters or shears rated for high carbon steel to avoid tool damage or wire deformation at the cut point. When forming springs or wire shapes, work in a controlled environment and follow applicable shop safety standards.