Screw-in insert

Screw-in Thread Insert

High-quality threaded inserts for wood, metal & plastic

What is a screw-in insert and why use it?

Screw-in inserts are metal bushings with internal metric threads, designed to be screwed directly into wood, metal, or plastic. They provide a strong and durable anchoring point for screws or threaded rods, increasing the reliability and lifespan of assemblies.

Stainless steel wood insert nut

Self tapping slotted insert

Wood insert nut with hex

Wood insert nut with hex and collar

Long wood insert nut with hex

Self tapping insert with 3 holes

Box self tapping slotted inserts

Box wood inserts

Wood insert with hex and collar in die cast

Slotted wood insert without reservoir

Short threaded die cast wood insert

Mechanical tool for screw inserts

Manual tool for screw inserts

Wood insert with hex and collar

Wood insert with collar and left outer thread

Self tapping insert with 3 blind holes

Slotted reducer bushing

Slotted wood insert with reservoir

Non-slotted wood insert

Slotted wood insert with reduced head

Selftapping slotted insert with collar

Selftapping slotted insert with hex

Wood insert with hex, type SKD30

Wood insert with hex, type SKD330

Different types of inserts by material

At Juno Industries, we offer a wide range of screw-in inserts adapted to each application:

• Stainless steel / corrosion-resistant inserts: perfect for outdoor or marine use.

• Self-tapping inserts: featuring thread-cutting properties for easy installation in metal or plastic.

• Wood inserts (hex drive, flanged, long type): ideal for wood applications, heavy loads, or limited installation space.

Installation process by material

In wood

1. Choose the right insert based on wood type, thickness, and load requirements.

2. Mark the drilling points.

3. Drill the hole to the correct diameter and depth.

4. Screw in the insert using the proper tool or hex key.

5. Test the stability with a screw.

6. Repeat for each insert.

In metal

Follow a similar process, ensuring correct drill size and chamfering (see the technical drawing). Use inserts designed for metal applications, so slotted self-tapping inserts for unhardened steel and thermoplastics. In aluminium, we advice you to use the self-tapping inserts with 3 cutting holes.

In plastic

Use inserts specifically designed for plastics, depending on whether the material is thermoplastic (then use slotted self-tapping inserts) or fiber-reinforced (then use self-tapping inserts with 3 cutting holes).

Why choose Juno Industries?

With over 28 years of experience, Juno Industries offers one of the most complete ranges of screw-in thread inserts for wood, metal, and plastic. Our expertise guarantees durable, reliable, and application-specific fastening solutions across Europe.