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Sentinel Screws - Countersunk Twinthread Woodscrew - BZP Hardened Steel
When it comes to security woodscrews, Sentinel Countersunk Twinthread Woodscrews are hard to beat.
The Clutch Head Sentinel Countersunk Twinthread Woodscrew is manufactured from Hardened steel and finished in BZP (Bright Zinc Plate).
The pozidrive style clutch head allows the screws to be installed with a standard pozidrive screwdriver, but as these are one way screws, once installed they are almost impossible to remove without drilling them out.
Originally developed by Nettlefolds these inexpensive screws are a favourite with installers as the pozidrive style head makes the screws quicker and easier to install than standard clutch head screws,
...and they can even be installed with powered screwdrivers
Other Sentinel One Way Screws available from stock -
Sentinel Machine Screws -
Button Head Machine Screws
Countersunk Machine Screws
Sentinel Wood Screws -
Countersunk Twin Thread Woodscrews
Note: These one way screws are installed with a standard Posidrive type screwdriver
Traditional style clutch head screws are also available - see Clutch Head Screws
If you need two-way security woodscrews that can be removed again at at future date, consider a self tapping screw from our Security Torx range.
...for other types of Security Fasteners - click on the individual links across the the top of the page
...or to see All Security Screws and Fasteners - click on Start Selection Again
...for Bespoke Manufactured Screws - ...Contact us
Step 3 - now select the size you need by clicking on the appropriate 'Eye' logo (stock items) below:
LENGTH
3/4"
1"
1-1/4"
1-1/2"
2"
2-1/2"
3"
GAUGE
19mm)
25mm)
32mm)
38mm)
50mm)
63mm)
75mm)
6
(3.5
8
(4.2
10
(4.8
12
(5.5