1. Wire are designed for specialized or proprietary applications. 2. Types: steel spring, stainless steel spring, steel wire spring, leaf springs, coil springs, and industrial springs. 3. Wire springs have a wide variety of applications and are used in most industries. In the automotive industry, they are used in both front and rear suspension systems in cars. The spring coils cushion and absorb shocks and bumps as the vehicle is driven. Wire springs are also used in all types of hinges and assemblies such as self-closing doors and lids. Wire springs are widely utilized in industrial machinery. Tolerances are determined by material specifications standards for wire manufacturing. Distortion during coiling can slightly change the wire diameter in wire springs.