Specialinsert 861 S-Lok Brass Press-In Expanding Threaded Insert

Description

S-Lok 861 Brass Insert Benefits

• Press-in threaded insert designed for thermoplastics and thermosetting materials.
• Knurled external geometry provides strong torque and pull-out resistance.
• Compact body length allows installation in thinner wall sections.
• Manufactured in natural brass for corrosion resistance and conductivity.

S-Lok 861 Brass Insert Applications

• Thermoplastic housings installed using ultrasonic or heat insertion.
• Thermoset components installed through co-moulding processes.
• Electrical enclosures, molded assemblies, and control panels.
• Industrial equipment covers requiring durable internal machine threads.

Installation and Performance

The S-Lok 861 insert is engineered for reliable installation in plastic materials. In thermoplastics, it is typically installed using ultrasonic or heat insertion, allowing the surrounding material to flow into the external knurling for a secure mechanical bond. In thermosetting materials, installation occurs through co-moulding during the production cycle.

Proper hole preparation and process control are critical to performance. Maintaining recommended hole diameters and insertion parameters ensures optimal torque resistance and pull-out strength without overstressing the surrounding plastic.

Preliminary assembly trials are recommended to validate hole size, insertion method, and final performance values before full production release.

Sizing, Materials, and Availability

S-Lok 861 inserts are manufactured in brass with a natural finish. Standard metric thread sizes are available to match common machine screws used in molded plastic assemblies.

For full dimensional data and technical specifications, visit the official Specialinsert website. To explore additional threaded inserts and fastening solutions, review our broader fastening range.

If you need assistance selecting the correct insert size or installation method, our team can review your application and provide guidance on hole preparation and assembly best practices.