When a Phillips is not a Phillips!

Step 26 Uni-Screw®

The Uni-screw is being manufactured and distributed by Forward Engineering under a licence from Uni-Screw and the first commercial products are aimed at the building and DIY markets. Strong interest has also been shown by several industrial organisations. Uni-Screw can be a direct replacement for 25 other types of screwdrivers. No need for surplus drivers anymore!

A new design of screw head, the Uni-Screw, has been developed to rival the well-established slotted, Phillips and Pozidriv screws. It is based on a series of hexagonal recesses that avoids camout, which occurs with the other designs when higher torques are applied.

Advantages and Disadvantages of Uni-screw

Website claims Uni-Screw to be the first driver to drive both imperial and metric fasteners, virtually eliminates camout and stripping, positive control with stick fit, and increased productivity. Other benefits include the need for only one driver over a wide range of screw sizes and easy alignment of driver to screw.

Other recess forms can be used including pentagon and heptagon to provide high tamper resistance, and these can be tailored for a single user to give total security.

Comments

[matthewjsmith]

I think that this is the cleverest desing of the lot, shame that its not mass-market.

[scrapper666]

Your text says this screw is based on a series of hexagonal recesses, but several of your diagrams show a pentagonal structure.

[benthekahn]

He later states that "Other recess forms can be used including pentagon and heptagon to provide high tamper resistance, and these can be tailored for a single user to give total security."