Extension Spring #57, 1/4"x4-3/4"x.032WG

Extension Spring #57

The Extension Spring #57 (SRM57) is a durable spring steel extension spring designed to provide reliable tension and return force in mechanical assemblies. Built from high-strength spring steel wire, this spring stretches under load and returns to its original length when the force is removed, making it ideal for equipment mechanisms, repair work, and general shop applications. With a 1/4" outside diameter and a 4-3/4" length, it delivers consistent tension while remaining compact enough for a wide range of uses—because sometimes the smallest parts are the ones doing the most work behind the scenes.

Country of Origin
Varies by production batch

Key Features / Specifications

• Product Name / Size: Extension Spring #57
• Nominal Size: SRM57
• Product Type: Extension spring
• Material: Spring Steel
• Outside Diameter: 1/4"
• Length: 4-3/4"
• Wire Diameter: .035 WG
• Spring Type: Tension / extension spring
• Function: Provides pulling force when extended and returns to original length when released
• Construction: High-strength spring steel for durability and repeated cycling
• Applications: Suitable for mechanical assemblies, shop equipment, farm machinery, and general repair applications

Ideal For

• Mechanical linkages requiring return tension
• Equipment repairs and replacement springs
• Farm, shop, and maintenance projects
• Applications where compact springs provide controlled pulling force
• Situations where a small spring quietly keeps everything working—without demanding attention or a coffee break.