Security bolts are bolts with a special drive or head that ordinary tools cannot turn. They make it hard to remove signs, fittings, equipment and public furniture without the matching tool, and some one-way designs cannot be removed at all.
Linkworld makes security bolts from M4 to M12 in 304 and 316 stainless steel, carbon steel and alloy steel, with pin hex, pin Torx, two-hole and one-way drives. Our own QC laboratory checks each batch, and we pack in bulk cartons or in your own branded packs.
Security Bolt Specifications
| Specification | Configuration |
|---|---|
| Product | Security bolt / tamper proof bolt / anti-theft bolt |
| Thread sizes | M4, M5, M6, M8, M10 and M12 |
| Material | 304 or 316 stainless steel; carbon steel; alloy steel |
| Drives | Pin hex, pin Torx, two-hole (snake eye) and one-way slot |
| Heads | Button, countersunk and pan head |
| Finish | Plain stainless; zinc or black for steel |
| Packing | Bulk cartons, own-brand boxes and small packs |
Other sizes and finishes can be made to drawing or sample.
Where Security Bolts Are Used
- Public spaces park furniture, playgrounds and toilets
- Signs and number plates road signs and vehicle plates
- Buildings doors, grilles, handrails and fittings
- Equipment vending, utility and electrical enclosures
- Solar and outdoor installations panels and fixtures open to theft
Choosing a Security Drive
- Pin hex and pin Torx: removable with the matching bit; common for maintenance access.
- Two-hole: harder to find tools for; used in public areas.
- One-way slot: can be tightened but not undone; used for permanent fixings.
- Material: 316 stainless for coastal and outdoor sites; 304 for general use.
Common Purchasing Mistakes
Choosing one-way bolts for parts that need service. One-way bolts cannot be removed. Use pin drives where maintenance access is needed.
Forgetting the installation tools. Make sure installers have the matching bits for the drive you choose.
Using carbon steel outdoors. Use stainless steel for outdoor and coastal fixings.
Mixing drives in one range. Keep one drive type per project, so installers carry one bit.
What to Send with Your Enquiry
| Item | What to tell us |
|---|---|
| Size | Thread size and length |
| Drive and head | Drive type and head style |
| Material | 304 or 316 stainless, carbon or alloy steel |
| Quantity | Quantity for each size |
| Packing | Bulk carton, own-brand box or small pack |
| Destination | Destination port |
Packing and Supply for Distributors
We pack security bolts in bulk cartons for trade distribution, or in your own branded boxes, buckets and small packs for retail. Each size can carry its own label. For customers who plan several deliveries through the year, we offer free warehouse storage and staged shipments.
Work With Linkworld
Linkworld has more than 20 years of fastener export experience and runs its own cold heading workshop. Our own QC team checks drive recess, head, thread and finish in our inspection room before every shipment. We make security fasteners to drawing or sample, so special drives and heads are welcome.
Frequently Asked Questions
What are security bolts used for?
They stop people removing signs, fittings, furniture and equipment with ordinary tools.
What is a tamper proof bolt?
It is a bolt with a special drive, such as pin hex, pin Torx or two-hole, that needs a matching tool to turn.
Can one-way bolts be removed?
Not with normal tools. They are for permanent fixings.
What material are anti-theft bolts made from?
Mostly 304 or 316 stainless steel. Carbon and alloy steel are available for indoor use.
Which security drive should I choose?
Pin hex or pin Torx where maintenance access is needed, two-hole for public areas, and one-way slot for permanent fixings.
Looking for security bolts for your range or project?
Send the sizes, drive, material, quantity and packing you need through the enquiry form below, and our team will reply with the options that fit your range.
Send an Enquiry
Send a drawing, sample or clear reference photo. Add the quantity and application if available, and we can start from the information you already have.