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Understanding Vital Parts Security Ratings
A clear guide to understanding security fastener ratings and how each level protects against tampering and theft
Understanding Security Fastener Ratings
When choosing the right fastener it is not just about size or material it is about how much protection you need against tampering theft or vandalism. At Vital Parts our security fasteners are designed to provide varying degrees of resistance so you can match the right product to your project. Below we break down our five tier security rating system to help you understand which level best suits your needs.
1. Entry Level Security
Basic Protection provides a simple deterrent against casual interference. Ideal for low risk environments where convenience and affordability matter most.
2. Enhanced Security
Features specialised drive designs such as Pin Hex or Pin Torx that require unique tools which makes unauthorised removal more difficult. Ideal for public spaces.
3. Medium Security
Balances accessibility with resilience. Suitable for environments where tampering is a concern but maintenance is still required. Popular in automotive and transport.
4. High Security
Engineered for high risk areas with designs such as shear bolts and clutch heads. Ideal for prisons, detention facilities and secure infrastructure.
5. Max Security
Represents the strongest defence. Withstands determined tampering attempts and is used in critical applications such as aerospace medical devices and secure fencing.
Why Do Security Ratings Matter?
Choosing the correct security level ensures that your fasteners perform as intended. Whether protecting assets public equipment or sensitive infrastructure selecting the right rating prevents tampering and improves long term reliability.
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Security Product Ratings
| Security product | Security rating |
|---|---|
| 5-Lobe Button Head Security Screws |  2 WAY |
| 5-Lobe Countersunk Screws | 2 WAY |
| Kinmar Permanent Bolts |  1 WAY |
| Kinmar Removable Bolts |  2 WAY |
| Pin Torx Button Head Screws ISO 7380 |  2 WAY |
| Pin Hex Socket Button Head Screws | 2 WAY |
| Pin Hex Socket Countersunk Screws | 2 WAY |
| Snake Eye Pan Head Screws | 2 WAY |
| Snake Eye Countersunk Screws | 2 WAY |
| Clutch Head Machine Screws | 1 WAY |
| Shear Bolts | 1 WAY |
| Shear Nuts | 1 WAY |
| Pin Torx Button Head Barrel Nuts | 2 WAY |
| Pin Torx Countersunk Barrel Nuts | Rating 1 |
| Kinmar Permanent Nuts | 1 WAY |
| Kinmar Removable Nuts | 2 WAY |
| Security Button Head AB Self Tapping Screws |  Rating 3 |
| Security Countersunk AB Self Tapping Screws | Rating 3 |
| Security Pan Head AB Self Tapping Screws | Rating 3 |
Frequently asked questions
Security fasteners are specially designed screws, bolts and fixings that prevent tampering, theft or unauthorised removal. They require unique tools or drives for installation and removal.
Security fasteners provide an added layer of protection compared to standard screws. They deter theft, vandalism and interference which makes them ideal for public spaces and high security environments.
Vital Parts supplies a wide range including:
- Pin Hex and Pin Torx screws
- Clutch head one way screws
- Shear bolts for permanent fastening
- Security nuts with tamper resistant designs
We use a five tier rating system:
- Basic Protection → Everyday deterrent
- Reinforced Protection → Moderate tamper resistance
- Intermediate Security → Balanced durability and ease of access
- Advanced Security → High risk environments
- Ultimate Security → Maximum defence for critical applications
Yes. Most can be installed with standard tools although removal often requires specialist drivers. Some designs such as shear bolts are intended for permanent installation.
It depends on the type:
- Removable designs (Pin Hex, Pin Torx) can be undone with the correct tool
- Permanent designs (Clutch head, shear bolts) cannot be removed without damaging the fastener
Common applications include:
- Public furniture and playground equipment
- Automotive and transport
- Secure fencing and gates
- Hospitals, prisons and detention facilities
- Aerospace and medical equipment
Yes. Many security fasteners require matching drivers or sockets. Vital Parts offers the correct compatible tools for installation and removal.
Yes. Options include stainless steel, zinc plated steel and various specialist finishes to suit indoor, outdoor and high corrosion environments.
You can browse the full range on the Vital Parts website, choose the fastener type and size you need then place your order online.
Need help choosing security fasteners
Our technical team can help you select the right security rating for your application. Contact us today to discuss your requirements.
Browse Security Fasteners
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