Precision Brand 21039 Tempered Music Wire Coil 17 Gauge

Product Description

The PRECISION BRAND 21039 is a tempered music wire coil used in applications requiring consistent tensile strength, tight dimensional tolerances, and reliable spring-back characteristics. Manufactured from high carbon steel to ASTM A228 standards, this coil measures 0.039 inches in diameter at 17 gauge and delivers 247 feet of usable wire per coil. It is designed for fabrication shops, maintenance technicians, and trade professionals who form custom springs, wire forms, and mechanical components. The ASTM A228 designation confirms the wire meets established standards for high-carbon, cold-drawn spring steel quality.

This music wire coil is suited for light industrial and mechanical trade applications where precision wire forming is required. Typical uses include fabricating compression springs, extension springs, torsion springs, and small wire assemblies. At 17 gauge and 0.039 inches in diameter, it falls in the small-diameter range appropriate for intricate form work. Maintenance professionals, tool-and-die shops, and HVAC or equipment service technicians who fabricate replacement spring components on-site will find this coil a practical bench-stock item.

Key Features

• High carbon steel construction meets ASTM A228 standard for spring-quality music wire
• 17 gauge, 0.039 inch diameter provides consistent cross-section for repeatable spring forming
• 247-foot coil length maximizes yield per unit for high-volume fabrication tasks
• Tempered finish delivers controlled hardness and spring-back for demanding mechanical applications
• Sold as a single coil with no minimum order above one unit

Compatibility

Designed as a general-purpose spring-quality music wire coil suitable for any application requiring ASTM A228-compliant high carbon steel wire at 17 gauge (0.039 inches in diameter).

Installation Notes

Music wire should be cut and formed using tools rated for high carbon spring steel to avoid burring or work-hardening at the cut point. Wear appropriate eye and hand protection when uncoiling and cutting spring wire, as stored energy in the coil can cause sudden release. No heat treatment is required before use; the wire arrives in a tempered state ready for forming. Follow applicable shop safety standards and equipment manufacturer guidelines when fabricating replacement spring components.