Series 29 Standard, Symmetrical Heat/Ultrasonic Insert

Series 41 Through-Hole Molded-In Insert

Inserts for Plastics

SPIROL offers heat/ultrasonic, molded-in, press-in, expansion, and self-tapping inserts.  Our standard inserts have been designed for a broad set of plastic applications.  Here are design considerations.

Heat/Ultrasonic Inserts

Series 14 Tapered Hole
Tapered design for tapered holes for ease of location and reduced installation time.

Series 24 Continental and Series 25 Flanged
Designed for tapered hole sizes commonly specified in Continental Europe. The diameters are generally smaller than the Series 14.

Series 19 Straight Hole and Series 20 Flanged
Tapered design for straight holes to yield maximum performance with low radial stress.

Series 27 Standard and Series 28 Flanged
Symmetrical for ease of orientation and enhanced performance designed to minimize radial stresses for thin wall applications.

Series 29 Standard and Series30 Flanged
Symmetrical for ease of orientation and enhanced performance designed to maximize torque and pull out values.

Molded-In Inserts

Series 41 Through-Hole and Series 45 Blind End
Molded-In Inserts are designed to be placed in the mold cavity prior to plastic injection. They offer exceptional torque and pull-out resistance.  Series 45 inserts are blind ended and are designed for non-through hole applications.

Press-In Inserts

Series 50 Symmetrical and Series 51 Headed
Press-In Inserts are designed to be pressed into a plastic hole without melting the plastic prior to installation.  They offer rapid installation with no specialized equipment and achieve good overall joint performance.

Expansion Inserts

Series 15 Standard, Series 16 Flanged and Series 18 Reverse Expansion
Expansion Inserts provide permanent reusable threads at the lowest in-place cost for light duty applications.  Reverse Expansion Inserts offer exceptional performance for applications where the bolt is entering from the non-headed end of the insert.

Self Tapping Inserts

Series 10 Thread Forming and Series 13 Thread Cutting
Self Tapping Inserts are versatile.  They can be used in more plastics, including thermoset plastics, while providing the highest, most consistent pullout strength.

Except for press-in inserts, SPIROL inserts for plastics can be installed with conventional ultasonic welders or SPIROL heat insert drivers and threaded insert drivers for self tapping inserts.