A semi-tubular rivet is installed through a cold-forming process. A forming die compresses the hollow tail, causing it to flare outward and create a strong mechanical lock without welding or threading.
The tapered head ensures a low-profile finish while spreading load evenly across the joint surface. This helps prevent material damage and provides reliable fastening for thin sheets and soft substrates.
Head Style Comparison
| Feature | Tapered Head | Flat Head | Oval Head |
|---|---|---|---|
| Bearing surface | Angled ring spreads load | Flat washer-like ring | Curved crown, smaller contact ring |
| Surface profile | Flush or near-flush | Sits above surface | Domed, stands proud |
| Best for | Leather, fabric, coated panels, hinges | Rigid sheet metal, brackets |
Decorative hardware, bags |
Tapered Head Semi-Tubular Rivet Manufacturing
These rivets are manufactured using multi-station cold heading technology, a high-efficiency forming process that ensures consistent quality and mechanical performance. Carbon steel wire is first straightened and cut into precise slug lengths, then progressively formed through multiple stations including heading, piercing, and sizing.
The tapered head and semi-tubular tail are created through controlled cold forming without material removal. This process preserves the continuous grain structure of the metal, enhancing shear strength, fatigue resistance, and dimensional stability while reducing material waste.
After forming, each batch undergoes vibratory finishing or barrel deburring to eliminate sharp edges and surface imperfections. Automated optical sorting systems are used for dimensional inspection to ensure tight tolerances and consistent part quality.
Tapered Head Semi-Tubular Rivet Applications
Hinges and pivot hardware - The shank acts as a bearing surface; the tapered head keeps the leaf flat.
Luggage and bag hardware - Corner guards, handle anchors, and decorative studs benefit from the flush head and low setting force.
Light sheet metal assemblies - Electrical boxes, appliance panels, and brackets where welding would distort thin material.
Frequently Asked Questions
What is a tapered head semi-tubular rivet?
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A tapered head semi-tubular rivet is a mechanical fastener with an angled tapered head and a hollow tubular tail. During installation, the semi-tubular end is rolled or flared to create a secure joint while the tapered head provides a larger bearing surface and a low-profile appearance.
What sizes can you produce for carbon steel tapered head rivets?
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We support custom sizes based on customer drawings or samples, including head diameter, head height, shank diameter, rivet length, and hole depth. Custom tolerances are available for different assembly requirements.
How are semi-tubular rivets manufactured?
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These rivets are produced using multi-station cold heading technology. The carbon steel wire is cut, formed, pierced, and sized through multiple stations to create the tapered head and hollow tail while maintaining consistent mechanical strength.
What is the minimum order quantity for custom rivets?
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MOQ depends on the rivet size, material, tooling requirements, and production volume. We support both prototype development and large-scale production orders.
What information is needed for a rivet quotation?
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Please provide the rivet drawing or sample, material requirement, dimensions, surface finish, quantity, and application details. This allows us to recommend the most suitable manufacturing process and provide an accurate quotation.
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