Threaded insert brass M4, length 8.2 mm, model 1052

Brass threaded insert M4, length 8.2 mm, model 1052 is a precision metal insert designed to create a durable internal M4 thread in softer base materials. Manufactured from brass, the insert provides good corrosion resistance and consistent mechanical engagement when installed into plastics, wood, or composite panels. The 8.2 mm length gives sufficient thread depth for common M4 fasteners while keeping the insert compact for space-limited assemblies. This component is intended for applications in assembly, repair, and prototyping where a reliable M4 connection is required.

Advantages

The brass construction ensures stable thread performance and natural resistance to corrosion, reducing the risk of galling or seizing compared to some other materials. Its geometry is optimized to remain secure in press-fit installations or when embedded into molded or drilled cavities. The insert delivers consistent torque transfer and repeatable assembly cycles, extending the life of the joint in repeated fastening and unfastening situations.

Suitable for

• Creating M4 internal threads in thermoplastics and thermosets
• Thread reinforcement in wooden panels and furniture components
• Repairs and retrofitting of panels or consumer products
• Prototyping and small-series mechanical assemblies

Key specifications

• Thread size: M4 (metric)
• Overall length: 8.2 mm
• Material: brass (corrosion resistant)
• Intended installation: press-fit or insert into preformed/machined cavities
• Function: provides internal threaded connection for M4 fasteners

How to use

Select a suitable hole diameter and preparation method for the base material—drill or mold the receiving cavity to match the insert’s outer profile and length. For press-fit installation, align the insert concentrically and apply steady axial force using a press or insertion tool until the insert bottoms out in the cavity. In some plastic applications, ultrasonic or thermal insertion techniques may be used following the material and process guidelines. Verify axial alignment and ensure the internal M4 thread is clean before assembling the mating fastener.

Usage recommendations

For optimal retention, match the hole tolerance to the insert’s outer dimension and consider material-specific insertion methods: use press-fit for wood and rigid plastics, controlled thermal or ultrasonic insertion for thermoplastics, and ensure the cavity depth accommodates the full 8.2 mm length. When repeated disassembly is expected, use recommended torque values for M4 fasteners to avoid overloading the insert or the host material.