Locking ribs under the head fix firmly into the material and the flat pan head gives a neat finish when in place. The interlocking high low thread pattern gives very high pull out values, whilst the serrations on the threads removes more debris and reduces fixing stress, this also allows for closer fixing centres than expansion anchors and can be used closer to the edge of substrates.
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The sharp 25º point gives a fast start whilst the 2 Cutter slots allow screwing close to the edge without splitting. The addition of a 'rollet' on the shaft reduces drag and torsion forces on insertion resulting in a faster more efficient fixing.
eBay
Locking ribs under the head fix firmly into the material and the flat pan head gives a neat finish when in place. The interlocking high low thread pattern gives very high pull out values, whilst the serrations on the threads removes more debris and reduces fixing stress, this also allows for closer fixing centres than expansion anchors and can be used closer to the edge of substrates.
eBay
The sharp 25º point gives a fast start whilst the 2 Cutter slots allow screwing close to the edge without splitting. The addition of a 'rollet' on the shaft reduces drag and torsion forces on insertion resulting in a faster more efficient fixing.
eBay
eBay
eBay
The sharp 25o point gives a fast start whilst the 2 Cutter slots allow screwing close to the edge without splitting. The addition of a 'rollet' on the shaft reduces drag and torsion forces on insertion resulting in a faster more efficient fixing.
eBay
The self-colour stainless material is also gives an attractive finish if visible. The deep reinforced pozi drive countersunk head recess allows the best possible fit to the driver bit, reducing "cam out" and providing extra strength at the critical junction between shank and head.
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