Slotted Countersunk Screws Flat Head Slotted Screws

• 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

One letter countersunk head bolt is a common mechanical fastener that is widely used in many fields due to its unique appearance design and functional characteristics. The following provides a detailed description from multiple aspects:

• Structural features

Head: The head is flat, with a flat top surface and a conical side surface. When in contact with the surface of the connected part, it can completely sink into the pre processed countersunk hole, keeping the surface of the connected part flat and smooth, without any protrusions that hinder the installation of other components or affect the appearance. There is a straight groove on the head, which is convenient for tightening and disassembling with a straight screwdriver.

Screw: The screw part has external threads and is used in conjunction with nuts or holes with internal threads to achieve a secure connection. There are various specifications for screw length, which can be selected according to actual usage scenarios and the thickness of the connected parts.

Material: The main materials for countersunk head bolts are carbon steel, stainless steel, alloy steel, etc. Carbon steel material has lower cost and better strength, but its corrosion resistance is average; Stainless steel material has excellent corrosion resistance and is suitable for environments with humid and corrosive media; Alloy steel can achieve special properties such as high strength and high toughness by adding different alloying elements.

Working principle: When in use, first machine a countersunk hole on the connected part that matches the bolt head, pass a straight countersunk bolt through the countersunk hole and other connected parts, then screw a nut into one end of the screw, and rotate the straight groove of the bolt head with a straight screwdriver to generate axial tension between the bolt and nut, tightly connecting the connected parts together, and ensuring the reliability of the connection by using the friction and pre tightening force between the threads.

• Specification standard: According to national standards, its specifications are usually expressed as "thread specification (nominal diameter) x screw length", for example, M4 x 20, indicating that the nominal diameter of the bolt is 4 millimeters and the screw length is 20 millimeters. Common thread specifications include M2, M3, M4, M5, M6, etc., with screw lengths ranging from a few millimeters to hundreds of millimeters.

• Application scenarios

Furniture manufacturing: In furniture production, in order to ensure the appearance and flatness of the furniture surface, straight countersunk bolts are often used to connect the boards, such as the connection between the tabletop, table legs, and cabinet components.

Electronic products: Due to the high requirements for appearance and compact internal space of electronic products, the straight countersunk head bolt can sink into the surface of the shell to avoid protrusions that affect assembly and use. It is commonly used for fixing the shell and internal components of mobile phones, computers, tablets, and other devices.

Decoration and renovation: In the field of interior decoration and renovation, it is used to fix decorative panels, door and window accessories, etc., to keep the surface flat and improve aesthetics.

Mechanical equipment: In some parts that require surface flatness of components and relatively low stress, straight countersunk bolts are also used for connection, such as the installation of equipment protective covers, small brackets, and other components.