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The MILWAUKEE 40-50-9001 is a detent spring designed as a direct OEM replacement component for Milwaukee power tools. A detent spring provides the tension and snap-action feedback that holds moving parts, collars, or selector mechanisms in a defined position during tool operation. This type of spring is a precision-fit internal component, and using the correct OEM part number ensures proper function and fit within the tool assembly. Installation is typically performed by a qualified tool repair technician or a trade professional comfortable with power tool disassembly.
The 40-50-9001 detent spring is intended for use in Milwaukee power tools requiring this specific spring component as part of a repair or rebuild. It is commonly sourced when restoring a tool to factory operating condition after wear or failure of the original spring. Refer to the applicable Milwaukee service documentation or parts diagram to confirm fitment before ordering.
Designed as an OEM-style replacement detent spring for compatible Milwaukee power tools. Consult the Milwaukee parts diagram for your specific tool model to confirm this part number applies before installation.
Installation should be performed by a qualified tool repair technician familiar with Milwaukee power tool disassembly procedures. Disconnect and remove the tool battery or unplug the tool from any power source before beginning any internal service work. Refer to the Milwaukee service manual or exploded parts diagram for correct spring orientation and seating. Small internal springs can be under tension — use appropriate hand tools and eye protection during disassembly and reassembly.
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