Hi-Tork
PSM HI-TORK inserts are high-performance threaded inserts developed for thermoplastic materials. They are especially suited for plastics with high filler content (e.g. glass or mineral fills). Their design delivers exceptional pull-out and torque-out resistance, making them ideal where durability, strength, and repeated serviceability are required.
Advantages
- High pull out and torque performance
- Capable of providing "bolt break performance"
- Especially recommended for high fill plastics
- Tolerant of variations from moulding process
- High installation speeds
- Greatly reduced scrappage rate
- Higher productivity
- Provides high process capability
Selection of Inserts
High pull-out and torque-out strength, even in filled or engineering-grade plastics
Better centering in the hole thanks to their geometry
Greater contact area for mating parts, improving load distribution
Compatibility with high-fill materials that challenge conventional inserts
Reliable repeatability in production, thanks to tolerance robustness and performance margin
Selection of Inserts
ISO Metric
Other materials and lengths possible on quotation.
Specifying an Insert
Boss Design Specification
Hole Preparation
The special Hi-Tork hole form is specifically designed for moulding. Dimensions for the hole are detailed in diagram and table overleaf.
Installation
The fastener may be installed using either a pre-heating process or using heat generated by ultrasonics. Where pre-heating process is used, care must be exercised to ensure that the fastener softens but does not melt the plastics. P.S.M offers a wide range of pre-heating installation equipment which ensures high levels of process capability and throughput.
Wall Thickness
A general guide to minimum wall thickness is given in the data table but this will vary depending upon the nature of the plastic. Where thinner walls are required, these can often be accommodated, but consultation with the PSM Technology Centre or your local sales office and pre-production testing is strongly advised.
Performance Data
The complexity of materials and variations in service conditions make it impossible to detail fastener performance in individual applications. Please consult with the P.S.M Technology Centre or your local sales office for specific application advice.
Applications & Use Cases
HI-TORK inserts are ideal in demanding applications such as high-fill thermoplastic components, industrial housings, structural plastic parts, or scenarios where repeated disassembly is expected. They are frequently used in electronics, automotive plastic components, appliance housings, and any design requiring stronger threads in aggressive plastic materials.