M4 Round Reduced Head Thread Rivet Nut Insert
The M4 Round Reduced Head Thread Rivet Nut Insert is a threaded fastener specifically designed for use in thin-walled materials. Its round body with a smaller flat head makes it ideal for applications where space is limited or a low-profile finish is required. The “M4” refers to its internal metric thread size of 4 millimeters, suitable for medium-strength fastening needs. This rivet nut is installed using specialized tools, creating a secure, load-bearing thread in pre-drilled holes. It is commonly used in automotive sheet metal, household appliances, electronic enclosures, and lightweight structural assemblies.
Thread Size: M4 × 0.7 (ISO Metric)
Head Style: Reduced (small) flat head for minimal surface exposure
Body Type: Round, smooth or knurled shank options available
Grip Range: Typically 0.5 mm – 3.0 mm (varies by part number)
Head Diameter: ~6.5 – 7.5 mm (reduced for low-profile installation)
Body Length: Varies by grip range, approx. 11 – 13 mm standard
Finish Options:
Zinc-plated (clear or yellow)
Passivated stainless
Anodized aluminum (optional)
Installation: Compatible with manual, pneumatic, or hydraulic rivet nut tools
Automotive Industry
Used in vehicle body panels, brackets, and structural components where space is limited and secure internal threads are required.Consumer Electronics
Ideal for mounting circuit boards, control panels, and enclosures where a low-profile fastener is essential.Appliance Manufacturing
Commonly used in assembling metal housings, frames, and internal panels of household and industrial appliances.Furniture and Fixtures
Provides a concealed, load-bearing thread in sheet metal and composite components, especially in modular or knock-down assemblies.Lightweight Structures and Sheet Metal Fabrication
Ensures reliable threads in aluminum or thin steel components without distorting base materials.Electrical Enclosures and Cabinets
Enables tool-free installation of accessories and modules into metal enclosures where rear access is limited.
1. What is a reduced head rivet nut?
A reduced head rivet nut features a smaller diameter head compared to standard flat heads. It is designed for applications requiring a low-profile finish or where space is limited around the fastener head.
2. What does the “M4” designation mean?
“M4” refers to the internal thread size of the nut—4 millimeters with a 0.7 mm pitch, conforming to ISO metric standards.
3. What materials are available?
These inserts are typically available in:
- Carbon Steel (zinc-plated)
- Stainless Steel (304 or 316)
- Aluminum (for lightweight applications)
4. Where is this product typically used?
Common in automotive panels, electronics housings, appliances, and light structural assemblies—especially where a flush or low-profile finish is required.
5. How is it installed?
Installation requires a rivet nut tool (manual, pneumatic, or hydraulic) that draws the threaded shaft, deforming the body to grip the base material.
6. What grip range does it support?
Standard grip range varies by part number but typically spans 0.5 mm to 3.0 mm material thickness.
9. What is the difference between reduced head and standard head rivet nuts?
Reduced head variants offer a smaller flange footprint for tight-clearance or aesthetic-sensitive applications. Standard heads offer greater load distribution.
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