SS304 Stainless Steel DIN7967 Self Locking Counter Nut-Anti-Loose Cap Sleeve

描述

1. Performance & Material Properties
   • Premium SS304 Construction – Machined from AISI 304 austenitic stainless steel (18-8), offering a tensile strength of ≈515 MPa, yield strength of ≈215 MPa and >40 % elongation. The dense chromium-oxide passive film provides superior corrosion resistance in marine, chemical, and outdoor environments.
   • DIN 7967 Self-Locking Geometry – Features an axially deformed top section that grips the mating bolt’s threads, generating prevailing torque (≈15–20 Nm for M8) and resisting loosening under vibration, shock, and thermal cycling—without inserts or adhesives.
   • Counter-Nut Profile – Slim “jam” nut thickness (≈0.5× standard nut height) and chamfered bearing face allow use as a space-saving top nut, flange lock, or finishing nut in tight-clearance assemblies.
   • Reusable, Temperature-Stable Locking – The work-hardened locking zone maintains >80 % of its initial prevailing torque after ≥10 removal/re-installation cycles and remains effective from –50 °C to +200 °C.
2. Detailed Application Range
   • Machinery & Equipment – Ideal for locking in drive shafts, gearbox housings, and precision spindle assemblies where backlash and loosening can cause downtime or damage.
   • Automotive & Transportation – Used on engine accessories, exhaust brackets, suspension linkages and interior trim fasteners to resist vibration and thermal expansion cycles.
   • Electrical & Instrumentation – Secures terminal blocks, panel mount components and enclosures in power distribution, instrumentation racks and control cabinets.
   • Plumbing & Marine Installations – Locks fittings, clamps and railings exposed to salt spray, fuel, hydraulic fluids and continuous motion aboard ships, offshore platforms, and coastal structures.
3. Effortless Operation & Convenience
   • Standard Hex-Drive Installation – Fits any standard wrench, socket or torque wrench; the low-profile design slips into confined spaces and works with crowfoot adapters.
   • No Secondary Locking Required – Eliminates the need for washers, lock-tite or double-nut arrangements, reducing part count and assembly time.
   • Rapid Assembly & Serviceability – Prevailing torque achieved in one operation; nuts can be removed and re-installed with consistent clamping force in under 5 s per fastener.
   • Assortment Kits & Custom Marking – Available in mixed-size kits (M4–M12) packaged in compartmentalized cases; optional laser-engraved part codes or color anodized bands simplify inventory and maintenance.
4. Superior Quality & Long-Term Reliability
   • International Standards & Traceability – Manufactured in ISO 9001 and ISO 14001 certified plants to DIN 7967 and ANSI/ASME B18.16.5 tolerances (±0.05 mm); full heat-lot traceability from melt to finished part.
   • Rigorous Testing – Every production lot undergoes torque-to-turn validation, 500 h neutral salt-spray (ASTM B117) and ultrasonic crack detection to ensure mechanical consistency and corrosion resistance.
   • Vibration & Fatigue Resistance – Locking deformation zone and precision-rolled threads resist loosening under ≥10⁶ vibration cycles and repeated torque reversals.
   • Environmental & Safety Compliance – RoHS- and REACH-compliant; free from hexavalent chromium, PTFE inserts or other restricted substances, supporting sustainable manufacturing and safe end-use.