Rivet Threaded Inserts Flat Head Knurled Threaded Insert Rivet Nut M3 M4 M8 M10 M12

Beschrijving

What Are Rivet Threaded Inserts?

Rivet threaded inserts are permanent fastening solutions that combine the functions of a rivet and a threaded insert. They are installed into pre-drilled holes in thin or soft materials (like sheet metal or plastic) to create durable, load-bearing threads. Unlike traditional inserts, they deform during installation to lock securely in place without requiring access to the backside of the material.

Rivet Threaded Inserts: Specifications

1. Material

• Stainless Steel (304/316): Corrosion-resistant for marine/outdoor use

• Aluminum (6061-T6): Lightweight for aerospace applications

• Brass (CZ121): Non-sparking for explosive environments

• Carbon Steel (Grade 5): Cost-effective for industrial equipment

2. Surface Treatment

• Passivation (Stainless): Removes free iron, enhances corrosion resistance

• Anodizing (Aluminum): Hard coating (Type III) for wear resistance

• Zinc Plating (Carbon Steel): Basic corrosion protection

• PTFE Coating: Dry lubricant for easy thread engagement

3. Common Specifications

• Thread Sizes: #4-3/8″ UNC/M3-M12 metric

• Grip Range: 0.5mm-6mm material thickness

• Installation: Manual or pneumatic tool setting

• Standards: NASM 33540, DIN 7337

4. Applications

• Electronics: Thread reinforcement in aluminum device enclosures

• Automotive: Plastic bumper mounting points

• Aviation: Composite panel fastening in aircraft interiors

• Medical: Lightweight equipment assemblies

Excellent Case: Electric Vehicle Battery Enclosure

Challenge:
An EV manufacturer needed to create reliable M6 threads in 2mm aluminum battery trays without welding (to avoid heat distortion). Traditional rivnuts failed under 50+ assembly cycles.

Solution:

• Installed 316 stainless rivet inserts with knurled exterior:

  • Pull-Out Strength: 3,200N (vs 1,800N for standard rivnuts)

  • Conductivity: Maintained EMI shielding continuity

  • Installation Speed: 8 seconds per insert with pneumatic tool

Results:

• Withstood 200+ battery pack service cycles

• Reduced assembly defects by 95%

• Achieved IP67 sealing with integrated O-ring option

Key Advantages

✔ Blind-Side Installation – No backside access required
✔ Material Versatility – Works in metals, plastics, composites
✔ Vibration Resistant – Knurling/locking features prevent rotation