TRI-LOBULAR

The PROLOK range of TRI-LOBULAR Screws is one of the most popular security screws.

The Type 17 screw is suitable for going into wood and timber

• Zinc plated
• Galvanised steel
• Stainless steel

The Self-Drilling screw is suitable for going into metal, with no requirement to pre-drill - often used on security screens or doors and in the sign industry

• Galvanised steel

The Machine Screw  is suitable for going into metal - often used in playgrounds & on road signs

• Zinc plated
• 304 Stainless Steel

Please note that due to the extensive range of security screws and restricted supply of some tooling, we do not hold ANY stock. When you place an order, we order in from Sentinel, who will ship directly to you (usually by express airbag) 

Due to this arrangement the RETURN of screws may be subject to a re-stocking fee imposed by the manufacturer.

Tooling is NON-REFUNDABLE we therefore advise you contact Sentinel prior to making your purchase to confirm you have made the correct selection - 03 5445 3200