GB50981 - Aluminum Alloy - Grade B, Grade A - Grade 4.8 - Black Oxide
Product Details
Product Name: Yongjing Aluminum Alloy Knurled High Head Screw
Technical Standard: GB50981
Product Grade: Grade B / Grade A
Performance Grade: Grade 4.8
Material: Aluminum Alloy
Surface Treatment: Black Oxide
Product Type: Knurled High Head Screw (Customizable)
Product Specifications
Detailed product specifications can be provided according to customer requirements, including thread size, head height, knurl type (straight/reticulate) and other key parameters.
Product Description
Product Overview
This product is an aluminum alloy knurled high head screw complying with GB50981 standard, manufactured from aluminum alloy material and subjected to black oxide surface treatment. The screw features an elevated head design with straight or reticulate knurling on the side, facilitating finger gripping or tool anti-slip operation. Combining the lightweight characteristics of aluminum alloy with the excellent operability provided by knurling, it is suitable for scenarios requiring frequent manual adjustment or disassembly and having weight requirements.
Core Advantages
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Lightweight Design: The aluminum alloy material significantly reduces the product weight, suitable for weight-sensitive applications.
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Convenient Manual Operation: The high head design combined with knurled patterns provides excellent anti-slip performance and torque, facilitating manual tightening or loosening.
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Attractive and Durable Surface: Black oxide treatment not only enhances surface hardness, wear resistance and corrosion resistance, but also provides a deep black appearance.
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Good Strength and Conductivity: While ensuring Grade 4.8 mechanical performance, it retains the good electrical and thermal conductivity of aluminum alloy.
Applicable Industries
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Optical and Precision Instruments: Components requiring lightweight and manual precision adjustment such as microscope and measuring equipment adjustment knobs, and lens caps.
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Electronic Equipment and Cabinets: Fixation of covers and panels that need frequent opening and closing on server cabinets, communication equipment and testing instruments.
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Aerospace Interiors: Fixation of decorative panels and access covers in non-critical areas inside aircraft and spacecraft that require weight reduction and easy disassembly.
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Photography and Video Equipment: Components requiring quick adjustment and locking such as tripod heads, light stands and camera accessories.
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High-End Furniture and Hardware: Manual adjustment connection points that combine functionality and aesthetics, such as high-grade furniture adjustment feet and display cabinet supports.
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Industrial Equipment Adjustment Mechanisms: Knob screws used for manual fine-tuning of positions or parameters on experimental equipment, regulating valves and instruments.
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Automotive Modification and Interiors: Convenient installation and adjustment of automotive interior modification parts, audio equipment and non-critical accessories.
Warm Tips
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During manual operation, do not use excessive torque to avoid damaging the aluminum alloy threads or deforming the knurled patterns on the head.
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In environments requiring higher conductivity or specific chemical resistance, please confirm the applicability of the aluminum alloy and black oxide treatment.
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When installed on metal substrates, pay attention to electrochemical corrosion that may be caused by potential difference, and it is recommended to take appropriate insulation measures.
