DIN6331 Collar Nut

description

1. High-Strength, Integrated-Flange Performance
   • Forged from heat-treated medium-carbon steel to Property Class 10 (≈ 1 000 MPa tensile), the collar nut withstands extreme clamp loads without thread shear or head dilation.
   • A rigid, one-piece collar (flange) delivers up to 2.5 × the bearing area of a standard hex nut, spreading load and eliminating the need for separate washers on soft or slotted surfaces.
   • Uniform 8 µm electro-zinc plating, sealed with trivalent passivation, provides ≥ 120 h neutral-salt-spray resistance (ISO 9227). Optional black zinc, zinc-nickel, zinc-flake, phosphate + oil, or any RAL/Pantone powder top-coat pushes life past 500 h while enabling quick visual coding.
   • Roll-formed ISO-metric Class 6H threads run the full height, ensuring low torque scatter and excellent fatigue strength during repeated tightening cycles.
2. Wide, Cross-Industry Application Spectrum
   • Machine-Tool & Work-Holding Fixtures: Clamps T-slot studs, strap clamps, and step blocks in milling, turning, and EDM setups where rigid preload and quick swap-out are critical.
   • Mold & Die Construction: Locks pillar posts, ejector plates, and bolster assemblies while the broad collar prevents imprinting on precision ground surfaces.
   • Construction & Structural Steel: Secures base-plate anchors, scaffold couplers, and form-tie bars; colour-matched coatings aid trade-discipline identification on busy sites.
   • Renewable Energy, Mining & Heavy Equipment: Holds bearing housings, rail clips, and gearbox covers exposed to vibration, shock, and abrasive contaminants.
3. Operator-Friendly, Time-Saving Handling
   • Integral collar removes the need to search for loose washers, cutting setup time by up to 35 % in high-mix assembly or maintenance tasks.
   • Chamfered lead-in and lightly staked start thread allow parts to be spun on by hand, lowering cross-thread risk during blind or overhead installation.
   • Standard hex profile suits all common wrenches, sockets, and power drivers; the flange acts as a built-in stop, ensuring consistent seating depth without torque-controlled tools.
   • Offered in bulk cartons, resealable service pouches, or automated feeder trays for seamless use in field kits, manual workcells, and robotic pick-and-place stations.
4. Proven Quality & Full Traceability
   • Every lot undergoes 100 % optical inspection for collar concentricity ≤ 0.03 mm TIR, thread go/no-go, and burr height < 0.05 mm; statistical data logged for ISO 9001, IATF 16949, and PPAP Level 3 records.
   • Shot-blasted surfaces achieve Ra ≤ 1.6 µm prior to plating, reducing galling and easing future removal.
   • Finish palette ranges from clear, yellow, black, or olive zinc to duplex powder coats, accommodating brand identity, maintenance-zone coding, or low-visibility requirements without compromising dimensional tolerance.
   • Shipments include RoHS 3, REACH, and material compliance certificates plus QR-coded labels that trace each nut back to its melt lot, assuring complete supply-chain transparency for safety-critical installations in aerospace, infrastructure, and medical equipment.