Red Copper Countersunk Hex Socket Screws M2–M10 DIN7991 Bulk

Red Copper Conductive Countersunk Hex Socket Bolts – M2 to M10

Meet your go-to fastener for electrical and precision DIY projects. These JARBLUE Red Copper Flat-Head Countersunk Screws (DIN7991 standard) combine excellent electrical conductivity with reliable mechanical strength. Whether you're assembling circuit boards, grounding components, or tackling any task where conductivity matters, these machine screws deliver a clean, flush finish every time.

Available in a wide range of metric sizes — M2, M2.5, M3, M4, M5, M6, M8, and M10 — and sold in convenient multi-packs, these bolts are ideal for electronics hobbyists, engineers, and professional tradespeople alike. The hex socket (Allen key) drive style ensures a secure, cam-out-resistant grip for precise tightening even in tight spaces.

Key Features

• Material: Pure red copper for superior electrical conductivity
• Standard: DIN7991 countersunk flat-head specification
• Drive Style: Hex socket (Allen/hex key) — no cam-out, maximum torque
• Head Style: Flat countersunk — sits flush with the surface for a clean finish
• Size Range: M2, M2.5, M3, M4, M5, M6, M8, M10
• Use Case: Electrical assemblies, grounding, electronics, DIY projects, and more
• Pack Quantity: Available in bulk packs (50–99 pcs) for great value
• Certification: CE certified
• Customizable: Custom sizes and quantities available

Why Red Copper?

Red copper (pure copper) offers outstanding electrical and thermal conductivity compared to steel or zinc alloys, making it the preferred choice for electrically conductive fastening applications. It is also corrosion-resistant in most environments, ensuring long-lasting performance.

Made in Mainland China.

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Frequently Asked Questions

Q: What sizes are available for these red copper countersunk hex socket screws?

A: These DIN7991 red copper countersunk screws are available in M2, M2.5, M3, M4, M5, M6, M8, and M10 metric sizes, with various length options depending on the selected size. Bulk packs of 50–99 pieces are available, and custom quantities can be arranged.

Q: Are these screws suitable for electrical or grounding applications?

A: Yes! Made from pure red copper, these screws offer excellent electrical conductivity, making them ideal for electrical assemblies, grounding connections, circuit board mounting, and any application where a conductive fastener is required.

Q: What tool do I need to install these screws?

A: These screws use a hex socket (Allen key / hex key) drive. The required hex key size depends on the screw diameter — standard metric hex keys are used. The hex socket drive provides a firm, cam-out-resistant grip for precise and secure installation even in confined spaces.

Q: Are these screws CE certified?

A: Yes, these JARBLUE red copper hex socket screws are CE certified, confirming they meet relevant European safety and quality standards for electrical DIY supplies.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.