Durable Flat Head Slotted Screws with Full Thread for Industrial Use

• Customization: Available
• Material: Stainless Steel
• Type: Round Head
• Model NO.: 1-1
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN
• Grade: 4.8
• Application: Machinery, Building
• Finish: Color-Zinc Plated
• Use: Standard
• Whether to Support Customization: Support
• Thread Type: Full Thread
• After-Sales: Three Months
• Transport Package: Container
• Specification: 1-30
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

The countersunk head bolt is a versatile mechanical fastener renowned for its distinctive design and functional properties, making it a staple across numerous industries. Below is an elaborate exploration of its features and applications:

• Structural Features

Head: Designed with a flat top and conical sides, the head of the bolt seamlessly integrates into a pre-machined countersunk hole, ensuring a flush and unbroken surface on the connected part. This design eliminates protrusions, facilitating the installation of additional components while preserving aesthetic appeal. The head features a straight groove, enabling effortless tightening and removal with a straight screwdriver.

Screw: The screw section boasts external threads designed to mate with nuts or internally threaded holes, establishing a robust and reliable connection. A range of screw lengths is available to accommodate diverse application needs and the thickness of connected materials.

Material: Countersunk head bolts can be manufactured from carbon steel, stainless steel, or alloy steel. Carbon steel offers an economical option with strong structural integrity, though it has moderate corrosion resistance. Stainless steel excels in corrosion resistance, making it ideal for moist or corrosive environments. Alloy steel, by incorporating specific alloying elements, can achieve exceptional strength and toughness.

Working Principle: Utilizing these bolts involves machining a compatible countersunk hole in the material to be joined. A straight countersunk bolt is then inserted through the hole and mated with a nut at the screw's end. By turning the bolt head's straight groove with a screwdriver, axial tension is created between the bolt and nut, firmly securing the parts with friction and pre-tensioning forces ensuring connection reliability.

• Specification Standard: Adhering to national standards, bolt specifications are typically denoted as "thread specification (nominal diameter) x screw length." For instance, M4 x 20 signifies a nominal diameter of 4 millimeters with a screw length of 20 millimeters. Popular thread sizes include M2, M3, M4, M5, and M6, with lengths ranging from a few millimeters to several hundred millimeters.

• Application Scenarios

Furniture Manufacturing: In furniture crafting, straight countersunk bolts are indispensable for connecting components while maintaining surface flatness and visual appeal, commonly used in joining tabletops, table legs, and cabinet parts.

Electronic Products: Given the stringent demands for sleek appearance and compact internal structures in electronics, straight countersunk bolts are ideal for securing the shells and internal parts without surface protrusions, frequently applied in mobile phones, computers, tablets, and more.

Decoration and Renovation: In the realms of interior design and renovation, these bolts are employed to attach decorative panels, door and window accessories, ensuring a smooth surface and enhanced aesthetic value.

Mechanical Equipment: Straight countersunk bolts are utilized in applications requiring surface smoothness and minimal stress, such as securing protective covers, small brackets, and various components in machinery.