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Black & Decker™ Outer Flange (For Use With Grinder And Angle Grinder)
Airgas Part #:BDR390426-00
Manufacturer Part #:390426-00
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$8.34
Each
$8.34
/Each
Item Details
- The Black & Decker 390426-00 is a heavy-duty industrial outer flange, also classified as an outer clamp washer or disc nut, designed to secure 7-inch to 9-inch grinding, cutting, and abrasive disks to the drive spindles of high-speed angle grinders. Engineered by Stanley Black & Decker, this forged steel component maintains axial clamping forces under extreme rotational stress and is compatible with various industrial tool brands including DeWALT and Craftsman.
Features
- Anti-Slippage Concentric Clamping: Inner recess aligns with spindle diameter to establish zero horizontal runout
- Optimized Force Distribution: Large surface area minimizes localized clamping pressures on grinding wheel cores to prevent micro-fractures
- Thermal Dissipation Architecture: Forged carbon steel pulls operational heat away from spindle bearings and the abrasive arbor zone
- OEM Quality Assurance: Factory-supplied component matched to original gear reduction case balancing profiles
- Precision-Ground Flange Landing Face: Provides uniform torque distribution across Type 27 depressed center and Type 1 straight wheels
- Heat-Treated Substrate: Rockwell hardness optimized to prevent internal thread stripping during sudden torque spikes or wheel stalls
- Corrosion Resistance: Conversion coating protects against moisture, cutting fluids, and concrete dust
- Dual-Orientation Compatibility: Reversible hub profile accommodates both thin cutting wheels and thick grinding wheels
Specifications
- Manufacturer Part Number (MPN): 390426-00
- Global Trade Item Number (GTIN): 0697478110586
- Universal Product Code (UPC): 697478110586
- Thread Profile: 5/8"-11 TPI (Threads Per Inch) internal threading
- Maximum Rotational Capacity: 8,500 RPM
- Load Profile: 4.0 HP
- Length / Outer Diameter: 2.50 inches (63.50 mm)
- Width / Clamping Diameter: 2.25 inches (57.15 mm)
- Height / Axial Thickness: 1.40 inches (35.56 mm)
- Net Weight: 0.14 lbs (2.24 oz / 63.5 grams)
- Substrate Material: High-tensile forged structural carbon steel alloy
- Surface Coating: Industrial black oxide or zinc-phosphate conversion coating
- Tightening Interface: Dual pin-hole layout and multi-flat wrench profiling
- Compatible Models (Black & Decker/Craftsman): 26438 (Type 1), 900264380, 27328 (Type 1), 27328-CA, 27704 (Type 1), 900277040
- Compatible Models (DeWALT): DW840 (Types 1, 2, 3), DW840K (Types 1, 2), DWE4517 (Types 3, 5, 6), DWE4517W, DWE4519 (Types 4, 5, 6), DWE4519-CA, D28474WB3 (Type 5), D28490-B3 (Type 5), D28491-B3 (Type 5), D28499X-B3LZ, DWE490-B3, DWE491-B3
Applications
- Heavy Metal Fabrication: Securing weld-blending grinding discs for structural weldments and plate chamfering
- Foundry Operations: Removal of risers, gates, and flash lines from large-scale castings using 4.0 HP tools
- Shipbuilding and Marine Infrastructure: Continuous structural steel preparation in high-humidity and salt-mist environments
- Concrete and Masonry Processing: Securing diamond cup wheels for surface leveling, coating removal, and form-mark cleanup
- Industrial Maintenance: Fleet maintenance and restoration of 7-inch and 9-inch high-amperage angle grinders
Product Attributes
Product Type
» Flange
