Product Description
M8 A2 Stainless Steel Countersunk Pin Torx Security Screws
M8 stainless steel machine screws with a countersunk head and six-lobe security recess containing a central pin. A matching T40 security Torx bit with a centre hole is required, helping deter removal with ordinary driver bits.
Available Sizes
| Thread Size | Length | Thread Pitch | Security Drive |
|---|---|---|---|
| M8 | 16mm | 1.25mm | T40 pin Torx |
| M8 | 20mm | 1.25mm | T40 pin Torx |
| M8 | 25mm | 1.25mm | T40 pin Torx |
| M8 | 30mm | 1.25mm | T40 pin Torx |
| M8 | 40mm | 1.25mm | T40 pin Torx |
| M8 | 50mm | 1.25mm | T40 pin Torx |
Countersunk screw length is measured overall, including the head.
Key Features
- A2 stainless steel
- M8 metric coarse thread with 1.25mm pitch
- Countersunk head for seating flush in a suitable countersink
- Six-lobe pin Torx security drive
- T40 security driver required
- Listed head diameter: 15.7mm
- Listed head height: 5mm
ISO 14581 is a reference standard for hexalobular socket countersunk head screws; this product uses a security-pin drive variant. Please contact us before ordering to confirm compliance certification availability.
Use with matching M8 nuts or tapped holes. Fully engage the correct security bit before tightening and check that the countersink accommodates the head.
Related Products
- M4 A2 Stainless Steel Countersunk Pin Torx Security Screws
- M5 A2 Stainless Steel Countersunk Pin Torx Security Screws
- M6 A2 Stainless Steel Countersunk Pin Torx Security Screws
- Nuts
Specifications are intended as a guide. Confirm the required thread size, length, head dimensions and security drive before ordering.

| A | B | C | D | E | F |
| 8mm | 16mm | 15.7mm | 5mm | 1.25 | T40 |
| 8mm | 20mm | 15.7mm | 5mm | 1.25 | T40 |
| 8mm | 25mm | 15.7mm | 5mm | 1.25 | T40 |
| 8mm | 30mm | 15.7mm | 5mm | 1.25 | T40 |
| 8mm | 40mm | 15.7mm | 5mm | 1.25 | T40 |
| 8mm | 50mm | 15.7mm | 5mm | 1.25 | T40 |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.