M5 M6 A2 Stainless Pan Head Torx Pin Security Machine Screws | Anti-Vandal Bolts

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Description

 

M5 & M6 Torx Pin Security Screws — Tamper-Resistant Fastening You Can Count On

When standard screws leave your fixtures, enclosures, or public installations vulnerable to tampering and vandalism, you need a fastener that works as a deterrent. These M5 M6 Torx pin security machine screws are engineered for installers, facilities managers, and DIYers who need reliable, tamper-resistant fastening in high-traffic or publicly accessible areas.

Each screw is a pan head machine screw machined from A2 stainless steel (equivalent to 304 SS), featuring a 6-lobe Torx Pin (TR) drive recess with a center security pin. Available in M5 and M6 diameters with lengths ranging from 6mm (≈1/4") to 100mm (≈3-15/16"), sold in flexible pack quantities of 1, 5, 10, 30, 50, or 100 pieces to suit both one-off repairs and large-scale installations.

Typical applications include securing electrical enclosure panels and junction box covers, mounting signage and display frames in public spaces, fastening access panels on transit vehicles and playground equipment, and anti-vandal installation of street furniture and outdoor fixtures — anywhere a standard screw would invite unauthorized removal.

🔵 Compatibility: Standard ISO metric coarse thread — M5 (0.8mm pitch) and M6 (1.0mm pitch). Fits standard M5/M6 metric tapped holes and nuts. Requires a Torx Pin (TR) driver bit — not compatible with standard Torx (TX) bits.
⚠️ Driver Bit Required: A Torx Pin (TR) security bit is needed for installation and removal. Standard Torx bits will not engage. Please confirm the exact TR size for your variant before ordering.

✅ Key Features of These Torx Pin Security Machine Screws

  • 🔒 Tamper-Resistant 6-Lobe Pin Drive — The center security pin in the Torx recess blocks standard TX bits, making unauthorized removal of anti-vandal screws significantly harder without the correct TR driver.
  • 🦾 A2 Stainless Steel Construction — Manufactured from A2 (304) stainless steel for solid corrosion resistance, making these pan head security bolts suitable for both indoor and outdoor installations in most environments.
  • 🔩 Low-Profile Pan Head Design — The wide, flat pan head distributes clamping load evenly across the mating surface, reducing the risk of material deformation — ideal for thin panels and sheet metal fastening.
  • 📏 Wide Size Range — Available in M5 and M6 diameters with lengths from 6mm (≈1/4") to 100mm (≈3-15/16"), covering the most common metric machine screw sizes for enclosures, fixtures, and structural panels.
  • 📦 Flexible Pack Quantities — Order as few as 1 or as many as 100 pieces per variant, so you only buy what you need — whether it's a single replacement or a bulk supply for a commercial installation project.
  • ⚙️ ISO Metric Coarse Thread — Standard M5 × 0.8mm and M6 × 1.0mm coarse pitch threads ensure compatibility with off-the-shelf metric nuts, inserts, and tapped holes without special tooling or adapters.

📐 Technical Specifications — M5 M6 Pan Head Torx Pin Security Machine Screws

Material A2 Stainless Steel (304 equivalent)
Head Style Pan Head
Drive Type Torx Pin (6-Lobe TR / Security Torx)
Available Diameters M5, M6
Thread Pitch M5: 0.8mm coarse | M6: 1.0mm coarse
Available Lengths 6mm (≈1/4") – 100mm (≈3-15/16") — see variant options
Pack Quantities 1, 5, 10, 30, 50, 100 pieces
Finish Natural stainless (uncoated)
Thread Standard ISO metric coarse
Driver Bit Required Torx Pin (TR) — size varies by diameter; contact us to confirm
Tensile Strength (typical) ~700 MPa (A2-70 class)
Corrosion Resistance Good — suitable for outdoor use in most climates
Country of Origin See variant options

❓ Frequently Asked Questions

How do I choose the right length for my application?

A general rule: the engaged thread length should be at least 1.5× the screw diameter. For M5, aim for at least 7.5mm of thread engagement; for M6, at least 9mm. For example, if you're fastening a 10mm panel to a bracket, an M5 x 20mm (≈3/4") screw typically works well. Always account for material thickness plus thread engagement depth.

What drive tool do I need for these Torx Pin security screws?

These screws use a 6-lobe Torx Pin (also called Torx Plus Pin or TR drive) bit with a center pin that prevents standard Torx bits from engaging. For M5 you generally need a TR20 or TR25 bit; for M6 typically TR25 or TR27. Contact us to confirm the exact drive size for your chosen variant.

How strong are A2 stainless steel screws?

A2 stainless steel (ISO 3506 property class 70) generally has a tensile strength of approximately 700 MPa and a proof load stress of around 450 MPa. This makes them suitable for most light-to-medium structural and fastening applications. For heavy-load or high-vibration environments, consider A4-80 or higher-grade fasteners.

Can these screws be used outdoors or in wet environments?

Yes. A2 stainless steel offers good corrosion resistance and is generally suitable for outdoor use in most climates, including light marine environments. For prolonged saltwater or highly corrosive exposure, A4 (316) stainless steel is typically recommended.

What thread standard do these screws use — are they compatible with standard metric nuts?

Yes. These are metric machine screws with standard ISO coarse pitch threads — M5 screws have a 0.8mm pitch and M6 screws have a 1.0mm pitch. They are compatible with standard M5 and M6 metric nuts and tapped holes. They are not compatible with UNC/UNF inch-standard threads.

Why choose a security screw over a standard Torx screw?

The center pin in the drive recess prevents standard Torx bits from seating, making removal extremely difficult without the correct Torx Pin driver. This deters tampering, vandalism, and unauthorized disassembly — ideal for public fixtures, enclosures, and equipment panels where security is a priority.

How many screws come in each order, and is bulk pricing available?

You choose your pack quantity at checkout: 1, 5, 10, 30, 50, or 100 pieces per order. Larger packs offer a lower per-unit cost, making them ideal for contractors and bulk installation projects. Mix and match sizes by adding multiple variants to your cart.

🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.

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