GB853 - 304 Stainless Steel - Grade A - Whitened (Pickling and Passivation)
Product Details
Product Name: Yongjing Square Slant Notched Flat Washer
Technical Standard: GB853
Product Grade: Grade A
Material: 304 Stainless Steel
Surface Treatment: Whitened (Pickling and Passivation)
Product Type: Square Slant Notched Flat Washer Structure
Product Specifications
Detailed product specifications can be provided according to customer requirements, including inner diameter, outer diameter, square size, notch angle, thickness and other key parameters.
Product Description
Product Overview
This product is a square slant notched flat washer complying with the GB853 standard, manufactured from 304 stainless steel and achieving Grade A precision. Its unique square design with a single-side slant notch can be embedded or clamped into the corresponding structure, effectively preventing the washer from rotating synchronously with the bolt after installation. The surface is treated with "whitening" (pickling and passivation), which enhances corrosion resistance and maintains the natural color of stainless steel. It is specially used for bolt connection parts that require anti-rotation function, providing reliable locking and protection.
Core Advantages
-
Effective Anti-Rotation: The unique square slant notch design can be clamped into the corresponding groove or edge of the base during installation, preventing the washer from rotating with the bolt/nut and ensuring stable preload.
-
Excellent Corrosion Resistance: 304 stainless steel material combined with pickling and passivation treatment provides excellent rust and corrosion resistance, suitable for harsh environments.
-
Convenient Installation and Positioning: The slant notch design facilitates observing the installation direction and can quickly align and clamp with the corresponding structure, improving assembly efficiency.
-
Good Standard Versatility: Complying with the national standard GB853, it has standard dimensions and strong replaceability, suitable for standard anti-rotation design requirements.
Applicable Industries
-
Heavy Machinery and Equipment: Key connection parts with strong vibration that require anti-loosening and anti-rotation, such as construction machinery, mining equipment, and large pumps and valves.
-
Rail Transit: Fastening points that require high-reliability anti-loosening, such as suspension and bogies of locomotives and rail facilities.
-
Power and Energy Equipment: Connections that bear long-term vibration and have high safety requirements, such as generator sets, high-voltage switchgear, and transformers.
-
Chemical and Marine Engineering: Connections that still need to ensure locking force in corrosive environments, such as reaction kettles, pipe flanges, and offshore platforms.
-
High-End Structural Engineering: Occasions with clear design requirements for fastener anti-rotation, such as connection points of steel structure bridges and large building curtain walls.
-
Precision Instruments and Machine Tools: Adjustment mechanisms or fixed points in precision equipment that need to prevent preload loss caused by micro-movement.
Warm Tips
-
During installation, please ensure that the square slant notch of the washer is completely matched and clamped with the corresponding card slot or edge on the base (or nut) to achieve the anti-rotation function.
-
When used in extreme chemical or marine environments that require extremely high corrosion resistance, it is recommended to consult professionals to evaluate the material applicability.
-
It is recommended to use it with bolts and nuts of the same or higher corrosion resistance grade to maximize the overall service life and reliability of the connection system.
