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FASTENERS & SEALING


NEW STAINLESS STEEL PINS


ew stainless steel PEM TK TackSert pins from PennEngineering offer ideal alternatives to screws for attaching thin panels in assemblies. They can securely attach panels of any material to base panels manufactured from common casting materials or plastics. PEM TK TackSert pins deliver


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advantages over screws by eliminating any need for mating threads from tapped holes or inserts and the rework frequently required due to screw cross-threading and driver bit “cam- out”. Patches intended to prevent fastener loosening in service are unnecessary.


Among design features, a tapered tip assists in pin location to enable easier alignment into a base panel, a specially engineered diagonal broaching knurl creates a fi rm interference fi t without hole- tolerance issues, and a low-profi le head


minimises protrusion on the attached panel.


The pins are offered in a variety of lengths and can attach sheets with thicknesses from 1.7mm to 4.7mm. For plastic base, simple press-in installation is performed by preparing properly sized mounting holes in the top sheet and base panel, placing the pin through the hole and into the through or blind mounting hole of the base, and then applying suffi cient squeezing force using punch and anvil until the head of the pin contacts the top sheet. ●


For more information visit www.pemnet.com


PLASTIC COMPOSITE COMPRESSION SPRINGS I


ncreasingly, engineers are seeing the benefi ts of plastic spring technology. By offering non-magnetic, non- corrosive and chemically inert properties in a lightweight package, LeeP springs are often a complete solution for applications in areas of medical device manufacturing, pharmaceutical equipment, aerospace and portable instrumentation. The range combines the strength of metal springs with the attributes of high performing engineered thermoplastics – in this case Ultem PEI (polyetherimide) resin, which has excellent thermal stability


and electrical insulation properties, while being non-contaminating. They have low fl ammability and are recyclable in compliance with global regulations. LeeP plastic composite springs are


stocked in a variety of standard sizes, each available in a ‘rainbow’ of strengths formulated from different Ultem resins. The fi ve increasing strengths are easily identifi able by distinct colours: red, orange, yellow, green and violet. Lee Spring can provide Custom LeeP compression springs to meet the most exacting specifi cations. Lee P springs offer high strength to weight ratios that optimise performance while reducing mass. ●


For more information visit www.leespring.co.uk


www.pemnet.com


To install, simply: 1. Punch Hole 2. Insert Fastener 3. Press Into Place


Reliable, flexible and cost effective thin sheet attachment solutions from genuine PEM® brand fasteners. PEM is a registered trademark of PennEngineering - PEM111 52 www.engineerlive.com


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