Brass Machine Screws

Brass Machine Screws are precision-engineered fasteners used in a wide range of applications, including electronics, automotive, and industrial assemblies. Made from high-quality brass, these screws offer excellent corrosion resistance, durability, and electrical conductivity, making them ideal for environments where reliability is essential. At Conex Metals, we manufacture Brass Machine Screws in our advanced facility in Jamnagar, India, ensuring consistent quality and precision. With a strong global presence, we supply our screws to industries that demand excellence in both performance and craftsmanship.

CSK Screws DIN 963

CSK Screws, short for Countersunk Screws, are screws designed to sit flush with or below the surface of the material into which they are inserted. This is achieved by the tapered, conical head that fits neatly into a countersunk hole, providing a smooth, flat surface.

CSK Screws DIN 963l Datasheet
Diameter d1	M2	M2.5	M3	M4	M5	M6	M8	M10
t min	0.4	0.5	0.6	0.8	1	1.2	1.6	2
n	0.5	0.6	0.8	1	1.2	1.6	2	2.5
k max	1.2	1.5	1.65	2.2	2.5	3	4	5
d2 max	3.8	4.7	5.6	7.5	9.2	11	14.5	18

 

Pan head screws DIN 85

Brass Pan head screws are fasteners with a rounded, flat top and a cylindrical head that slightly protrudes above the surface. Their wide head provides excellent grip and allows for better load distribution on the surface, making them a popular choice for various applications.

Pan head screws DIN 85 Datasheet
Diameter d1	M2	M2.5	M3	M4	M5	M6	M8
t	0.5	0.6	0.7	1	1.2	1.5	1.9
n	0.6	0.6	0.8	1	1.2	1.6	2
k	1.2	1.5	1.8	2.4	3	3.6	4.8
d2	4	5	6	8	10	12	16

 

 

CSK Screws (Countersunk Screws)

 Features:

1. Head Shape: The head is typically conical, with a flat top.
2. Drive Types: Common drives include Phillips, slotted, Torx, and Allen (hex).
3. Thread Types: Available in both coarse and fine threads, depending on the material application.
4. Materials: Made from materials such as stainless steel, carbon steel, brass, or alloy steel. They may be coated or plated for corrosion resistance.
5. Finishes: Can come in finishes like zinc plating, black oxide, chrome, or plain.

 

Brass Machine Screws Applications:

1. Woodworking: Used in furniture, cabinetry, and flooring to ensure a smooth finish.
2. Metal Fabrication: Common in joining metal pieces, especially in industries like automotive and construction.
3. Electrical and Electronics: Used for securing components where a flush surface is critical.
4. General Purpose: Found in a variety of applications where aesthetics and safety are important.

 

Brass Machine Screws Advantages:

1. Aesthetic: Creates a neat, clean, and professional appearance.
2. Safety: Reduces the risk of snagging or scratching due to protruding screws.
3. Durability: Provides a strong and secure joint.
4. Versatility: Available in various sizes, materials, and finishes to suit diverse applications.

 

Brass Machine Screws Common Standards:

• ISO 7046
• DIN 85 Pan head Screws
• DIN 963 CSK screws
• DIN 965 (cross-recessed CSK screws)
• DIN 7991 (hex socket CSK screws)

 

How to Select:

1. Material: Choose a material resistant to the environment (e.g., stainless steel for corrosion resistance).
2. Size: Consider the diameter, length, and head angle (typically 90°).
3. Drive Type: Match the drive type to the tools available.
4. Load: Ensure the screw can handle the required load without stripping or breaking.
5. Finish: Select finishes like zinc or black oxide for corrosion resistance or aesthetics.

 

Examples of Use:

• Fixing hinges on doors and cabinets.
• Mounting brackets on walls.
• Securing plates and panels in machinery.

 

Pan Head Screws

Features:

1. Head Shape: Rounded and slightly domed with a flat underside, which sits flush against the material.
2. Drive Types: Common drive types include slotted, Phillips, Torx, and hex.
3. Thread Types: Available in machine threads (for metal) and self-tapping threads (for wood, plastic, etc.).
4. Materials: Typically made from stainless steel, carbon steel, brass, or nylon. Variants may have coatings like zinc, nickel, or black oxide.
5. Size Variations: Comes in a wide range of diameters, lengths, and thread pitches.

 

Applications:

1. Electronics: Often used in assembling electrical devices and circuit boards due to their neat appearance.
2. Automotive: Securing parts where a low-profile head is not critical.
3. Construction: Used in light fixtures, wall brackets, and other assemblies.
4. Furniture Assembly: Joining wood or composite panels.
5. Plastics and Soft Materials: Widely used in applications involving softer materials where a flat underside is advantageous.

 

Advantages:

1. Ease of Use: Pan head screws are easy to drive and remove with standard tools.
2. Grip: The wide head offers greater grip and torque transfer.
3. Load Distribution: The flat underside distributes load evenly, reducing the risk of damage to the surface.
4. Aesthetic: Provides a clean, rounded finish.

 

Comparison with Other Screw Types:

• Versus Flat Head Screws: Pan head screws protrude above the surface, while flat head screws sit flush or recessed.
• Versus Round Head Screws: Pan heads provide a broader, flatter contact area than round heads, which are more domed.

 

Common Standards:

• ISO 7045 (Cross-recessed pan head screws)
• DIN 7985 (Machine screws with pan heads)

 

Selection Tips:

1. Material: For outdoor or corrosive environments, use stainless steel or coated screws.
2. Drive Type: Match the drive type (e.g., Phillips or Torx) with available tools.
3. Thread Type: Choose self-tapping for soft materials or machine screws for metal.
4. Head Size: Consider the size based on the surface area to be clamped.

 

Examples of Use:

• Assembling consumer electronics like laptops and smartphones.
• Securing light fixtures and brackets in construction.
• Attaching decorative trims and components in furniture.