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Milwaukee® 1/4" Collet Nut (For Use With D.I Die Grinder)

Milwaukee® 1/4" Collet Nut (For Use With D.I Die Grinder)

By
Milwaukee Electric Tool Corporation

Airgas Part #:MET48-68-0031

Manufacturer Part #:48-68-0031


$6.54 /Each
Each

Item Details

  • 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)
  • Substrate Material: 4140 Chromium-Molybdenum (Chromoly) structural alloy steel
  • Thermal Treatment: Through-heat-treated to 45-50 Rockwell C (RC)
  • Surface Finish: Hot black oxide treatment
  • Regulatory Compliance: OSHA standards and Underwriters Laboratories (UL) replacement guidelines

Applications

  • Automotive Service Fabrication: Securing carbide burrs for engine block porting, cylinder head modifications, and weld seam smoothing.
  • Aerospace & Mechanical Metalwork: Clamping mounted grinding stones, abrasive flap wheels, and deburring bits for interior pipe joints and machined slots.
  • Industrial Electrical Maintenance: Securing wire wheels and polishing accessories for cleaning power distribution busbars and terminal connections.
  • Commercial Finish Carpentry: Securing 1/4" shank carbide router bits for profiling hardwood edges, cutting dadoes, and flush-trimming.
  • Compatible Tool Model 2485-20: M12 FUEL Cordless 1/4" Right Angle Die Grinder
  • Compatible Tool Model 2486-20: M12 FUEL Cordless 1/4" Straight Die Grinder
  • Compatible Tool Model 2784-20: M18 FUEL Cordless 1/4" Straight Die Grinder
  • Compatible Tool Model 2723-20: M18 FUEL Cordless Compact Router
  • Compatible Tool Model 5192 / 5192-2: 110V Corded Die Grinder
  • Compatible Tool Model 5194: 110V Corded D.I. Grinder
  • Compatible Tool Model 5196 / 5196-2: 110V Corded 2-Inch High Speed Die Grinder

Product Attributes

Product Type

» Collet Nut

Size Description

» 1/4"

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