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Sentinel Countersunk Security Wood Screw

Sentinel security screws – countersunk wood screw

Sentinel security screws are quick and easy to install, using only a standard cross head or pozi driver. Quick to install with power drivers or standard screw drivers, these are a popular choice for installers and for large volume applications.

Sentinel countersunk wood screws have a unique head which can only be turned clockwise, so once securely tightened, they cannot be removed without drilling out.

  • 1-way permanent countersunk wood screw
  • Tamper-proof fixing for use where maintenance is not required
  • Suitable for high torque applications
  • Good for use with power drivers

Countersunk security wood screws

Designed to fix to wooden surfaces, we recommend creating a pilot hole before inserting the wood screw.

The Sentinel drive offers medium security resistance against vandals and thieves at a relatively low cost. An adaptation of the original Nettlefolds ‘Pozi’ drive, designed to provide a secure and permanent fixing, and can be used in high volume, inserted with a power tool.

With high resistance to cam-out, Sentinel screws are a preferred choice for applications requiring high volume, labour intensive work.

Sentinel countersunk wood screws can be used with security Wave Nuts, Shear Nuts, Kinmar Reusable Nuts, Kinmar Permanent Nuts, 4-Hole Nuts or Pin Torx Barrel Nuts for added security.

Available from stock in zinc plate, with other sizes and materials available to order.
Specials made to order, including medium / high volume manufacture, modifications and custom parts to drawings – please enquire.

Gauge / Length (mm) 3/4″
1 1/4″
1 1/2″
2 1/2″
No.6 (3.5mm) marker-image marker-image
No.8 (4.2mm) marker-image marker-image marker-image marker-image marker-image
No.10 (4.8mm) marker-image marker-image marker-image marker-image marker-image
No.12 (5.5mm) marker-image marker-image marker-image

Sentinel countersunk woodscrew technical drawing

No.6 No.8 No.10 No.12
DK (mm) 6.8 8.4 9.8 11.7
K (mm) 2.5 2.8 3.5 4.2

*For guidance purposes only

Sentinel Countersunk Security Wood Screw