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The Milwaukee 48-68-0031 is a genuine Original Equipment Manufacturer (OEM) 1/4-inch collet nut designed to secure collet assemblies on die grinders and routers. It converts rotational torque into lateral clamping force to lock 1/4-inch shanks onto tool spindles and is engineered to maintain rotational stability at speeds exceeding 30,000 RPM.
Features
Self-Locking Retention Architecture: Internal structural step grips the collet face to prevent bits from vibrating loose or over-tightening under reverse cutting loads.
Wide Profile Hex Faces: Optimized flat hex areas provide broad wrench contact points to prevent corner rounding during torque application.
True Concentric Thread Matching: Precision-machined 9/16"-28 internal threads ensure exact alignment with the tool spindle to minimize runout and workpiece chattering.
Anti-Galling Surface: Hot black oxide coating reduces the thread coefficient of friction to prevent seizing and atmospheric corrosion.
OEM Geometry: Ensures correct clamping geometry for the Milwaukee collet system to maintain secure accessory retention at operating speeds.
Specifications
Manufacturer: Milwaukee Electric Tool Corporation
Part Number (MPN): 48-68-0031
Universal Product Code (UPC): 045242159017
UNSPSC Commodity Code: 27110000
Collet/Accessory Capacity: 1/4 in (6.35 mm)
Internal Thread Size: 9/16" - 28 UNEF
Outer Hex Wrench Drive Size: 11/16 in (0.687 in)
Total Height/Length: 0.531 in (13.5 mm)
Maximum Outside Diameter: 0.740 in (18.8 mm)
Through-Hole Clearance Diameter: 0.370 in (9.4 mm)
Component Net Weight: 0.03 lbs (0.48 oz / 13.6 grams)
