SI® INSERTS FOR PLASTIC Ultrasonic/Heat Staking Inserts       CAD/Spec Description of each product category • Tapered, Thru Threaded - IUB, IUC • Straight Wall Thru Threaded - IUTB, IUTC • Symmetrical, Thru Threaded - ISB, ISC Molded-In Inserts       CAD/Spec Description of each product category • Blind Threaded - IBB, IBC • Self-Locking Blind Threaded - IBLC • Thru Threaded - ITB, ITC • Knurled Spacers - STKB, STKC Press-In Inserts       CAD/Spec Description of each product category • Hexagonal - NFPC, NFPA • Thru Threaded - PPB • Flange-Head - PFLB • Straight Knurl - PKB     Click here for a listing of ultrasonic/heat staking equipment manufacturers.