La fijación y apertura de pernos y tuercas adopta un diseño no estándar, y la coincidencia
Para resolver los problemas de apertura y fijación se utilizan herramientas no estándar. En general, se utilizan otras
wrenches cannot be inserted. In the appearance design of nuts and bolts, non-standard slotting,
apertura o herramientas de ranura pentagonal, heptagonal, de nueve esquinas o a medida correspondiente
han desempeñado un muy buen efecto antirrobo
El proceso de estampado en frío es uno de los nuevos procesos de mecanizado a presión de menor o ningún corte
metal. Es un método de transformación que utiliza la deformación plástica del metal bajo la acción de
fuerzas externas y, con ayuda de moldes, redistribuye y transfiere el volumen de metal para formar
las piezas o formatos necesarios. El proceso de estampación en frío es el más adecuado para producir piezas estándar.
elementos de fijación como pernos, tornillos, tuercas, remaches, pasadores, etc.
A2-70 Stainless Steel Flange Nueces – Complete Overview
1. Definition & Purpose
An A2-70 flange nut is a stainless steel locking nut with an integrated wide circular flange at its base. It is designed to distribute clamping pressure, reduce surface damage, and resist loosening under vibration.
The “A2-70” designation specifies:
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A2: Austenitic stainless steel (Type 304 – 18% Cr, 8% Ni)
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70: Minimum tensile strength of 700 MPa (with a proof load of 450 MPa)
2. Material Properties
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Corrosion Resistance: Excellent resistance to rust, water, and mild chemicals (suitable for outdoor, marine, and food-grade applications).
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Temperature Range: Typically performs well between -200°C to +400°C (varies based on environment).
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Magnetic Properties: Generally non-magnetic (but may become slightly magnetic after cold working).
3. Design Features
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Flange Type:
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Flat Flange (Smooth): Standard load distribution.
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Serrated Flange: Teeth on the underside grip the surface, preventing loosening from vibration.
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Thread Type: Metric (e.g., M6, M8, M10) or UNC/UNF (imperial).
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Finish: Typically natural mill finish (bright, uncoated stainless steel), but may also be dull polished or electropolished for specific uses.
6. Common Applications
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Automotive & Machinery: Engine components, exhaust systems, and vibrating equipment.
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Plumbing & HVAC: Piping, valves, and fluid systems.
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Marine & Offshore: Saltwater-resistant fastening.
8. Limitations
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Not for Extreme Chloride Exposure (e.g., constant saltwater submersion – A4-70 is better).
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Higher Cost than carbon steel or zinc-plated nuts.
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Limited High-Temp Use – May lose strength above 400°C.
Conclusion
The A2-70 stainless steel flange nut is a high-strength, corrosion-resistant fastener ideal for applications requiring vibration resistance, load distribution, and durability.
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