86617M1B- Impact Socket Set-17PCs- ¾”Drive

86617M1B Series is built for mission-critical heavy service:

• 86400 Series Cr-Mo Construction: The defining technical feature. Every socket in this 17-piece set is forged from Chrome Molybdenum (Cr-Mo) steel. This material is specifically chosen for its superior ability to absorb the repeated high-energy “hammering” of ¾” pneumatic impact wrenches without metal fatigue or cracking.
• Massive 19mm–55mm Spectrum: Unlike standard kits that stop at 32mm or 36mm, the 86617M1B includes critical large-bore sizes: 41, 46, 50, and 55mm. This makes it the essential kit for structural bolting and heavy-duty drivetrain maintenance.
• An-Lock Drive® Geometry: Every 86400 series socket features a specialized internal profile that focuses the drive force on the fastener flats. This is vital at these high torque levels to prevent rounding-off large, expensive nuts and bolts.
• Black Phosphate Anti-Corrosion Finish: Every component is treated with an industrial black phosphate coating. This chemical conversion provides a high-friction surface for handling and superior protection against industrial oils, moisture, and chemical exposure.
• Standard-Length High-Torque Profile: The “shallow” profile ensures maximum rigidity and energy transfer from the impact anvil directly to the fastener, minimizing the harmonic vibration common in deep-well sockets.