Phenolic inserts replace brass or stainless steel.A thermoset A polymer-based liquid or powder that becomes solid when heated, placed under pressure, treated with a chemical or via radiation. The curing process creates a chemical bond that, unlike a thermoplastic, prevents the material from being remelted. See thermoplastic. molder mold·er v. mold·ered, mold·er·ing, mold·ers v.intr. To crumble to dust; disintegrate. v.tr. To cause to crumble. See Synonyms at decay. has come out with threaded inserts of glass-filled phenolic phe·no·lic adj. Of, relating to, containing, or derived from phenol. n. Any of various synthetic thermosetting resins, obtained by the reaction of phenols with simple aldehydes and used as adhesives. that reportedly can replace metal inserts at lower cost and with numerous performance benefits. The first versions of Hard Thred inserts from AJR AJR American Journal of Roentgenology AJR American Journalism Review AJR Academy for Jewish Religion AJR Association of Jewish Refugees (UK organization) AJR Accelerated Junctional Rhythm Polytron, Inc., Huntingdon Valley, Pa., are aimed at cell phones. The latter currently use brass inserts, which are said to be over-engineered for many low-stress applications. Current phenolic inserts reportedly withstand stripping forces up to 270 lb, and higher performance grades are in development. Phenolic inserts are said to beat metal for durability in hostile, corrosive environments. The molded-in threads reportedly are self-locking, more precise than metal, and can be used many times without damage. Multiple ribs on the inserts' outer body provide better torque-holding ability, the company says. Like metal, the thermoset can be inserted ultrasonically. Tel: (215) 355-0400 * PTDirect: 651WP [ILLUSTRATION OMITTED] |
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