This replacement chuck screw is designed specifically for Milwau-kee power tools, fitting model 05-88-0019. The M8.0 x 1 left-hand thread with T-40 Torx head ensures secure attachment and reliable performance. This precision-engineered component is essential for maintaining the chuck assembly on your Milwau-kee drill or driver. The left-hand thread design prevents the screw from loosening during operation, while the T-40 Torx head pattern provides excellent grip for installation and removal. Perfect for both professional contractors and DIY enthusiasts who need to replace a worn or damaged chuck screw. Keep your tools running at peak performance with this vital replacement part.