Metal Thumb Screws with Customization Support and Galvanized Finish

• Customization: Available
• Material: Carbon Steel
• Type: Round Head
• Model NO.: 1-1
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN
• Grade: 4.8
• Surface Treatment: Galvanizing
• Whether to Support Customization: Support
• Thread Type: Full Thread
• Applicable Industries: General
• Transport Package: Container
• Specification: 1-30
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

The high head knurled hand screw is a quintessential mechanical component, distinguished by its elevated head shape adorned with intricate knurled patterns. This design marvel allows for effortless hand-tightening or loosening, eliminating the need for auxiliary tools and ensuring seamless operation.
Let's delve into a comprehensive description of this outstanding component:

Aesthetic and Functional Features

• Head Design: Boasting a high head configuration, this screw surpasses ordinary counterparts with its elevated and enlarged head, offering an expansive contact area for smooth manual operation. In cramped spaces, this high head design is a boon, facilitating optimal finger force application with ease.

• Knurled Surface: The screw head is embellished with a meticulously rolled pattern, available in options like straight or mesh lines. This enhanced surface roughness significantly boosts friction, ensuring a secure grip, minimizing slippage, and enhancing operational efficiency and stability.

Technical Specifications

Thread Options: A plethora of thread specifications are available, including M3, M4, M5, M6, M8, M10, M12, etc. Here, 'M' denotes metric threads, while the subsequent number indicates the thread's nominal diameter.

• Length Variations: Length options are vast, generally ranging between 5mm and 100mm, allowing for customization based on specific application requirements.

• Additional Parameters: Beyond thread specifications and length, these screws have diverse parameters, such as head diameter, thickness, and thread length, which vary to suit specific specifications and diverse application scenarios.

Material Composition and Surface Enhancements

• Material Choices: Featuring a range of materials like iron, carbon steel, stainless steel, copper, aluminum, and titanium, each offering unique properties. For instance, stainless steel is renowned for its corrosion resistance, ideal for harsh environments, while copper's excellent conductivity and thermal properties make it a staple in electrical equipment.

Surface Finishing: To heighten performance and longevity, surface treatments are common. Techniques such as blackening, galvanizing, phosphating, and electrophoresis are employed. Blackening creates an elegant oxidized layer for aesthetics and rust prevention, while galvanizing bestows a corrosion-resistant zinc layer, enhancing durability.

Industry-Standard Compliance and Specifications

Adherence to Standards: These screws are crafted and inspected according to the GB/T 834 national standard, detailing size, technical requisites, testing methods, and more, ensuring uncompromised quality and precision.

Identification Labeling: In line with national standards, screws are marked with information such as thread specification, nominal length, performance grade, and surface treatment. For instance, GB/T 834 M5 × 20-8.8-Zn denotes the thread specification (M5), nominal length (20mm), performance grade (8.8), and a zinc galvanized finish.

Versatile Application Areas

Electronics Sector: High head knurled hand screws are indispensable in electronics, securing components like case shells, hard drives, and memory modules in devices such as computer cases, mobile phones, and tablets. They offer hassle-free installation and removal, safeguarding devices from operational damage.