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Leadership in innovative aerospace fastening systems


For more than six decades, the Phillips Screw Company® has been the leader in developing the most innovative and cost effective aerospace fastening solutions


Today that commitment to excellence continues with the introduction of the MORTORQ®


spiral


drive system that solves assembly and maintenance problems on floorboards, leading and trailing edges, or anywhere that threaded fasteners must be easily and quickly installed and removed. We offer the perfect solution to meet and exceed your application challenges with the industry credibility vital to superior performance, cost savings, reduced footprint and long-term success. The MORTORQ®


Spiral drive system from


Phillips Screw Company provides full contact of the driver over the entire wing, resulting in high torque in a shallow recess design. This allows for a 15-25% reduction in overall head height as compared to a standard fastener. Thanks to the spiral-shaped design and vertical sidewalls of the recess, virtually all the rotational force of the driver is transferred to the screw in both the installation and removal mode. The open recess design also compensates for heavy coating build-up without affecting driveability. Product designers who take advantage of the low-profile / shallow recess head in their assemblies can signifi cantly downsize components, reduce mass, provide more application space, improve packaging fl exibility, and lower component material costs.


Repetitive installation of panel fasteners on airframes can be tedious work with a high potential for damage to the panel, fastener or tool. Recent advances fastener design have allowed the use of semi-automated installation


tools that dramatically reduce panel scrap rates while increasing tool life and fastener maintainability. Recent tests on a next generation maritime reconnaissance plane where a new fastener design was tested against the existing standard resulted in dramatic improvements in both fastener installation and removal and reuse. On six test panels (2 leading edge, 4 inboard engine), fasteners with the new MORTORQ spiral drive system were installed side-by-side with the existing NAS standard fasteners. The new fasteners had less than a 3% problem rate without removal of imbedded paint from the recess while the existing fastener experienced greater than a 30% failure rate even after paint removal. In another test application on floor panels for a next generation commercial jet the new fasteners have been successfully installed using semi-automated tooling. The advanced tool simultaneously collects installation data (direction of rotation, number of fasteners driven, run down time and if preset torque limits are achieved) and sends it to a remote PC collection node for quality analysis while driving a strip of 50 fasteners that are fed automatically. This new system can be used for major maintenance cycles, when floors are removed, by altering the tool for easy removal and then for automated reassembly to speed return of the aircraft to operation. Pairing the new fastener with the recently developed expanding nut saves additional weight in the joint providing significant fuel and operating cost savings.


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