Formex®
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TRILOBULAR SELF-FORMING SCREW FOR ALUMINIUM AND ALLOYS Screw with a curved triangular section (trilobular), with metric thread for direct screwing into blind or through holes in metal profiles and die-cast alloys, without tapping or using nuts. THREE LOBES which protrude slightly from the average circumference of the thread and, by deforming the material gradually, create the female screw, performing the threading (without creating shavings) and tightening at the same time. thread diameter shank diameter screw shank SCREW SHANK SECTION TIP with a gradually decreasing diameter, with sharp threads that ensure a clean entry and help to create the female screw. CARBONITRIDING HEAT TREATMENT This confers two properties to the screw: - very hard surface, for biting into the fibres of the hardest wood; - tough, elastic core, needed to avoid breakage of screws. core hardness surface hardness carburizing depth PROTECTIVE TREATMENT To protect the screw from rust and corrosion, guaranteeing reliability over time. MUSTAD Formex® screws are treated INC with products complying with the current EZ s. RoHS laws. The 100 hours white zinc hr plating treatment guarantees a rust 0 resistance a third higher than that of 10 standard galvanizing. Complies with the P L AT EN1670 standard grade 3. LUBRICATION MUSTAD antifriction treatment for reducing fastening force by up to 30%.

TRILOBULAR SELF-FORMING SCREW FOR ALUMINIUM AND ALLOYS CALIBRATED SCREWS The MUSTAD Formex® trilobular screws are manufactured in compliance with stricter tolerance limits than those of standard screws. They can therefore be defined ‘calibrated’, i.e. capable of sliding more easily in the guides and loading tubes of the screwing machines. MUSTAD self-forming screw FORMEX® inspected parts standard screw actual measurement nominal measurement AUTOMATIC SCREWING The set of characteristics illustrated above, together with a fully controlled production process, make the FORMEX® trilobular screws...