A thermoset molder has come out with threaded inserts of glass-filled phenolic that reportedly can replace metal inserts at lower cost and with numerous performance benefits. The first versions of Hard Thred inserts from AJR 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.
AJR Polytron, Inc.
465 Pike Rd. Unit 115 Huntingdon Valley, PA 19006
Phone (215) 355-0400 Fax (610) 995-9066