Black 304 SS Torx Pan Head Tamper-Proof Security Screws M3–M10

Black 304 Stainless Steel Six-Lobe Torx Pan Head Security Screws

Upgrade your fastening game with these premium black 304 stainless steel Torx (six-lobe) pan head security screws. Available with or without a centre pin for added tamper resistance, these bolts are ideal for furniture assembly, machinery, electronics enclosures, automotive trim, and any application where a secure, professional finish matters. The sleek black surface coating adds a stylish, modern look while providing extra corrosion resistance on top of the inherent durability of 304-grade stainless steel.

Made in Mainland China.

Key Features

• Material: 304 Stainless Steel — corrosion-resistant, strong, and long-lasting
• Drive Type: Six-Lobe Torx (Star) — with or without security pin
• Head Style: Pan / Round Button Head — low-profile, clean finish
• Surface Finish: Black — adds a modern look and extra corrosion protection
• Sizes Available: M3, M4, M5, M6, M8, M10
• Thread Pitches: 0.5 mm (M3) · 0.7 mm (M4) · 0.8 mm (M5) · 1.0 mm (M6) · 1.25 mm (M8) · 1.5 mm (M10)
• Tamper-Proof Design: Pin-in-Torx variant deters unauthorised removal
• Customisable: Available in a wide range of thread diameters and lengths (d × L, excluding head length)

Specifications

What Is a Torx (Six-Lobe) Security Screw?

Torx screws feature a star-shaped six-point drive that distributes torque evenly, reducing cam-out and stripping compared to Phillips or slotted drives. The pin-in-Torx variant adds a centre post inside the recess, requiring a special bit to drive or remove the screw — making it an excellent choice wherever tamper resistance and security are priorities.

Common Applications

• Furniture and cabinetry assembly
• Electronic enclosures and panel mounting
• Automotive interior trim and accessories
• Machinery, industrial equipment, and tooling fixtures
• Access panels, kiosks, and public installations requiring tamper resistance

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Learn more: OSHA on eye and face protection

Frequently Asked Questions

Q: What is the difference between a standard Torx screw and a Torx screw with a pin?

A: A standard six-lobe Torx screw can be driven with any compatible T-star bit. The pin version has a small post in the centre of the recess, which means a standard Torx bit will not fit — you need a special hollow-tip security Torx bit. This makes the pin version far more tamper-resistant and ideal for public-facing or high-security installations.

Q: How do I choose the right size? What does "M4×20" mean?

A: The "M" denotes metric thread. The number after "M" is the thread diameter in millimetres (e.g. M4 = 4 mm diameter). The second number is the shank length in millimetres, not including the head. So M4×20 means a 4 mm diameter screw with a 20 mm threaded shank. Measure your hole depth and select accordingly.

Q: Are these screws suitable for outdoor use?

A: Yes. The 304 stainless steel construction provides excellent corrosion resistance for most outdoor environments. The black surface coating adds an additional layer of protection. For heavily marine or salt-spray environments, 316 stainless steel would be recommended instead.

Q: Can I get custom lengths?

A: Yes — these screws are available in customised length options. Please select the thread diameter (M3–M10) and desired length when placing your order, or contact the store for custom requirements.

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.