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

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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