Spirol® Heat/Ultrasonic threaded nut inserts are made for after-mold installation into thermoplastics. Heat and ultrasonic installation garner exceptional performance results. There are several different series of Heat/Ultrasonic Inserts available in a long and short version of each thread size. Long lengths maximize torque and pull-out resistance, while short lengths are good for less rigid requirements at lower cost and shorter installation times. Some styles are available with or without a head. The head provides contact area for the joining component which also prevents jack-out (or when used in reverse, can prevent pull-through). However, adding a head results in additional cost of the raw material due to a larger diameter requirement to create the head. Some non-headed Inserts are symmetrical, therefore eliminating the need to position the insert prior to installation.
High quality performance results can be achieved with Spirol® Heat/Ultrasonic Threaded Nut Inserts, provided that they are used in the proper hole size with an acceptable wall thickness around the Insert. They also must be installed in a way that results in proper melting of the plastic to fill the voids around the Insert.
Spirol® Heat/Ultrasonic Threaded Nut Inserts provide the best balance between performance and cost!
SPIROL® Standard Heat/Ultrasonic Threaded Nut Insert options include Series 14 for tapered holes, Series 19 & 20 for straight holes and Series 29 & 30 for symmetrical and headed straight holes. SPIROL’s® Standard Heat/Ultrasonic Threaded Nut are available in thread sizes ranging from M2 (2-56) up to M8 (5/16-18).
Spirol® Series 14 Tapered Hole Inserts are used for applications with tapered holes. The tapered hole allows proper positioning and maximizes the contact area between the insert and hole’s wall prior to the introduction of heat or ultrasonic vibration. Series 14 Tapered Inserts are available in short and long versions, in metric thread sizes ranging from M2 to M8, and unified inch threads ranging from 2-56 to 5/16-18.
Spirol® Series 19 and Series 20 Headed-Straight Hole Inserts have a slightly tapered design for use with straight holes to produce high quality performance with low radial stress. A pre-drilled opening and tapered knurl with groove body design allows for accurate positioning and installation. The Series 20 has the same body design as the Series 19, however the Series 19 also includes a flat head to provide more contact area for the joining component to prevent jack-out. There are short and long options available for the Series 19 and Series 20 Inserts in metric thread sizes ranging from M2 to M8, and unified inch threads ranging from 2-56 to 5/16-18.
Spirol® Series 29 Symmetrical Insert and Series 30 Headed Inserts provide a wide center knurl between two smaller knurls and deep undercuts on both openings to maximize torque and pull-out performance. The Series 29 is symmetrical in design with a larger pre-drilled hole to facilitate easy orientation and installation into the hole. The Series 30 has the same body design as the Series 29, however the Series 30 also includes a flat head to provide more contact area for the joining component to prevent jack-out. There are short and long options available for the Series 29 and Series 30 Inserts in metric thread sizes ranging from M2 to M8, and unified inch threads ranging from 2-56 to 5/16-18.
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