Home » M4 Round Flat Head Bulk Rivet Nuts

M4 Round Flat Head Bulk Rivet Nuts
The M4 Round Flat Head Bulk Rivet Nuts are a cost-effective fastening solution ideal for projects that require large-scale installation. Featuring a cylindrical design, they provide stable threaded connections, while the flat head ensures a smooth and clean surface finish, making them suitable for applications with aesthetic requirements. The M4 size meets medium-load demands and is widely used in sheet metal, plastics, and lightweight materials. Supplied in bulk, they are perfect for factories or assembly lines, significantly improving installation efficiency and reducing costs.
Thread Size: M4 (metric) – suitable for applications requiring a 4mm internal thread.
Head Style: Flat Head – provides a wide bearing surface for increased pull-out resistance.
Body Type: Round Smooth Body – ideal for installation in softer materials such as plastic or thin metal sheets.
Grip Range: Typically 0.5mm – 2.5mm (may vary depending on exact model).
Head Diameter: Approx. 7.5mm – 8.0mm, ensuring a strong hold on the surface material.
Body Length: Approx. 11mm – allows for solid anchoring in medium-thickness materials.
Installation Method: Requires rivet nut tool (manual, pneumatic, or hydraulic).
Surface Finish: Zinc-plated or plain – protects against oxidation and improves appearance.
Automotive Industry: For attaching lightweight components to sheet metal, such as interior panels, brackets, and trim parts.
Electronics Enclosures: Providing strong thread support in thin enclosures made of aluminum or plastic.
Furniture Assembly: Used in joining metal frames or providing thread support in composite panels.
Appliances: Ideal for mounting components inside housings where access to the back is restricted.
Sheet Metal Fabrication: Creating durable threads in enclosures, ducts, and structural panels.
HVAC Systems: For securing panels, mounting brackets, and support structures.
DIY and Maintenance Projects: Great for quick repairs or modifications requiring durable threaded connections.
1. What is an M4 Round Flat Head Rivet Nut?
An M4 round flat head rivet nut is a threaded insert designed for installation in thin materials. The “M4” refers to the metric thread size (4 mm diameter), and the round flat head offers a broad bearing surface for secure fastening.
2. What are the key dimensional specifications?
Typical dimensions include:
- Grip range: Varies by part number; often from 0.5 mm to 3 mm.
- Body length: Varies based on grip range.
- Head diameter: Typically around 7–9 mm.
- Thread size: M4 × 0.7 pitch.
3. What tools are required for installation?
Installation is done using rivet nut tools:
- Manual tools – suitable for low-volume or field work.
- Pneumatic/hydraulic tools – for high-volume assembly lines. Ensure the tool has a compatible mandrel and nosepiece for M4.
4. Are these available in bulk packaging?
Yes, bulk packaging is standard—typically in bags or cartons of 1,000 to 5,000 pieces, depending on customer needs and supply agreements.
5. Do we offer custom or OEM labeling?
Yes, custom labeling and packaging configurations can be arranged upon request for OEMs and volume buyers.
6. What are common part number suffixes or variants?
Examples include:
- SF – Steel, Flat Head
- SS – Stainless Steel
- AL – Aluminum
- Variants may also denote knurling, closed-end design, or specific finishes.
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