Compression Spring #129, 1"x4-7/16"

Compression Spring #129, 1"x4-7/16"

The 18640 Compression Spring #129 (SRM129) is a heavy-duty spring steel compression spring designed for reliable force and return action in mechanical assemblies. With a 1" outer diameter and 4-7/16" overall length, this spring provides consistent compression performance in equipment, machinery, and repair applications. Manufactured from durable spring steel, it delivers the resilience and flexibility needed for repeated compression cycles—because a good spring should bounce back every time, not retire halfway through the job.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 18640
• Nominal Size: SRM129
• Product Type: Compression spring
• Material: Spring steel
• Outer Diameter: 1"
• Free Length: 4-7/16"
• Wire Diameter: 0.126 WG
• Spring Style: Compression
• Function: Provides compressive resistance and return force in mechanical systems

Ideal For

• Equipment repair and mechanical assemblies
• Applications requiring compression force and return motion
• Agricultural, industrial, and shop equipment
• Maintenance shops that keep replacement springs on hand
• Situations where the spring needs to compress smoothly and bounce back like it means it