Product Description
M8 Stainless Steel 6-Lobe Pin Torx Button Head Security Machine Screws
M8 stainless steel button head security machine screws featuring a tamper-resistant six-lobe drive with a central security pin. The pin prevents installation or removal with an ordinary Torx-style driver and requires a matching security bit with a centre hole.
These screws have a standard M8 x 1.25 metric coarse thread and are available in lengths from 16mm to 60mm. Their rounded, low-profile button head provides a neat appearance while making the fastening less accessible to conventional tools.
A compatible security screwdriver bit is supplied free with this product.
Key Features
- M8 metric coarse machine screw thread
- 1.25mm thread pitch
- Stainless steel construction
- Rounded button head
- Six-lobe internal security drive
- Central tamper-resistant pin
- Reusable with the correct security driver
- Compatible security driver bit included
- Available in packs from 1 to 1,000
Available Lengths
| Thread Size | Thread Pitch | Available Lengths | Head and Drive |
|---|---|---|---|
| M8 | 1.25mm | 16, 20, 25, 30, 40, 50 and 60mm | Button head with six-lobe pin security recess |
Screw length is measured from beneath the button head to the end of the threaded section.
Security Drive
The internal six-lobe recess provides positive driver engagement, while the raised pin in the centre prevents the use of an ordinary solid-ended driver. Installation and removal require a compatible pin-security bit with a corresponding centre hole.
This reusable security arrangement is useful where authorised maintenance access is required but removal using common screwdrivers should be discouraged. As the matching tool is commercially available, this drive is considered tamper-resistant rather than completely tamper-proof.
Typical Applications
- Public signs and display panels
- Electrical enclosures and control panels
- Vehicle and transport interiors
- Security cameras and protective housings
- Lighting equipment
- Public buildings and communal areas
- Machinery guards and access panels
- Retail fixtures and equipment
Installation Advice
Confirm that the mating nut or threaded component has an M8 x 1.25 metric thread. Use the supplied compatible security bit and keep the driver aligned with the recess during installation to reduce the risk of damaging the drive or centre pin.
Stainless steel threads can gall or seize. For serviceable assemblies, consider using a suitable anti-galling lubricant and install at a controlled speed without excessive tightening.
Useful Links
- View all six-lobe pin security screws
- View all machine screws
- View Torx button head machine screws
- M3 stainless six-lobe pin button security screws
- M4 stainless six-lobe pin button security screws
- M5 stainless six-lobe pin button security screws
- M6 stainless six-lobe pin button security screws
- M10 stainless six-lobe pin button security screws
- Metric thread data guide
- How to measure a bolt or screw
- Stainless steel thread galling prevention guide
Specifications are intended as a guide. Confirm the stainless grade, head dimensions, drive size and certification before use in safety-critical or specification-controlled applications.
