Milwaukee 40-50-8805 Extension Spring

**Milwaukee parts change not only by model# but also by serial number. Milwaukee’s site lets youlook up your tool’s parts diagram.Milwaukee Extension SpringModel Number: 40-50-8805The Milwaukee 40-50-8805 is a genuine OEM Extension Spring for use in compatible Milwaukee tools. Extension springs are helical coil springs that resist tensile (pulling apart) force storing energy when stretched and releasing it to pull components together or return them to their rest position. Unlike compression springs which push, extension springs pull, making them well suited for mechanisms that require a return-pull force such as trigger return assemblies, guard return mechanisms, lever return systems, and clutch engagement devices. Each extension spring is wound to a specific wire diameter, coil diameter, body length, and spring rate that determines its pull force at a given extension. A broken or permanently stretched extension spring that can no longer provide the correct return force requires replacement to restore proper mechanism function.Using a genuine Milwaukee OEM extension spring ensures the correct wire diameter, body length, hook configuration, and spring rate for the mechanism it serves. Non-OEM springs may not match the original force characteristics, leading to improper mechanism return or premature fatigue failure. Always verify your catalog number and serial number on Milwaukee’s website before ordering to confirm this is the correct extension spring for your specific unit.FeaturesGenuine Milwaukee OEM extension spring for compatible Milwaukee toolsResists tensile force to pull components together or return them to rest positionWound to specific wire diameter, body length, and spring rate for precise pull forceRestores correct return pull when the original spring breaks or permanently stretchesVerify catalog number and serial number on Milwaukee’s website before orderingSpecificationsType: Extension SpringMaterial: Spring SteelApplication: Component Return and Pull Force in Tool MechanismsCompatibility: Always verify part compatibility using your tool’s model and serial number before orderingIncludes(1) Milwaukee 40-50-8805 Extension Spring