Why Are Tubular Rivets the Smart Choice for Fast, Reliable, and Cost‑Effective Assembly?

When an assembly line needs to join thousands of components per hour, every second and every cent matters. Solid rivets are strong but slow to set. Screws and nuts introduce loose parts and risk of vibration loosening. Tubular rivets offer a proven middle path: they install quickly, hold securely, and cost less than most alternatives. Nuote Metals has produced millions of tubular rivets for industries that demand consistent quality at high speed.

This guide covers everything a professional needs to know about tubular rivets—from basic definitions to advanced selection criteria.

What Are Tubular Rivets? A Clear Definition

A tubular rivets is a permanent mechanical fastener with a pre‑formed head on one end and a hollow shank that extends either partially or fully through the body. The hollow section reduces the metal volume that must be deformed during installation, allowing the rivet to be set with significantly less force than a solid rivet of the same diameter.

Core Characteristics of Tubular Rivets

Hollow shank design: Reduces setting force by 30–60% compared to solid rivets

Permanent joint: Once rolled, the connection does not loosen under vibration

Two‑sided access required: Both ends of the rivet must be reachable for setting

Fast cycle times: Up to 150–200 pieces per minute on automated equipment

Clean finish: The rolled tail creates a smooth, burr‑free surface

Nuote Metals manufactures both full tubular and semi‑tubular rivets, allowing customers to select the exact strength‑to‑force ratio their application demands.

Full Tubular vs. Semi‑Tubular Rivets – Key Differences

Many buyers use the term tubular rivets broadly, but engineering specifications require a precise distinction between full tubular and semi‑tubular designs.

Feature	Full Tubular Rivet	Semi‑Tubular Rivet
Hollow depth	100% of shank length	20–40% of shank length (tail end only)
Setting force	Lowest (40–60% less than solid)	Moderate (30–50% less than solid)
Shear strength	50–70% of solid rivet	80–95% of solid rivet
Typical applications	Soft materials, decorative trims, lightweight assemblies	Brake linings, hinges, furniture, medium‑load joints
Material thickness range	Thin to medium (0.5–4.0 mm stack)	Medium to thick (1.0–8.0 mm stack)

Both types fall under the tubular rivets category. Nuote Metals recommends full tubular for low‑load, high‑speed jobs and semi‑tubular where greater structural integrity is required.

Head Styles and Configurations of Tubular Rivets

Nuote Metals produces tubular rivets in a variety of head shapes to match different assembly requirements and aesthetic preferences.

Common Head Styles

Head Style	Appearance	Best Application
Flat Head	Low profile, wide flange	Sheet metal, plastic housings, brake linings
Oval Head	Slightly domed, smooth finish	Furniture, luggage, visible exterior joints
Countersunk Head	Flush with surface	Aerospace panels, electronics enclosures
Round Head	High dome, classic rivet look	Heavy equipment, agricultural machinery
Truss Head	Extra‑wide bearing surface	Soft materials (wood, leather, rubber)

Custom Configurations Available

Shoulder type: Stepped shank for pivot or spacer functions

Step rivets: Variable shank diameter for multi‑layer stacks

Spur rivets: Small prongs on the underside for biting into soft materials

Materials and Finishes for Tubular Rivets

The performance of tubular rivets depends heavily on material selection. Nuote Metals offers a full range of metals and surface treatments.

Base Metal Options

Low Carbon Steel (C1008, C1010) : High strength, economical, requires plating for corrosion resistance. Used in automotive and general industry.

Stainless Steel (304, 316) : Excellent corrosion resistance, high durability. Ideal for marine, medical, and food processing equipment.

Aluminum (1100, 5056, 6061) : Lightweight, naturally corrosion‑resistant. Common in aerospace and consumer electronics.

Brass (C2600, C2700) : Good conductivity, attractive gold colour. Used in electrical terminals and decorative hardware.

Copper : Superior electrical and thermal conductivity. Found in transformers, earthing components, and heat exchangers.

Surface Finishes

Finish	Properties	Typical Use
Zinc Plating	Basic corrosion protection, low cost	Indoor automotive parts, hardware
Nickel Plating	Bright, smooth, moderate corrosion resistance	Visible electronics, decorative fasteners
Tin Plating	Solderable surface	Electrical connections, PCB assemblies
Passivation	For stainless steel only, removes free iron	Medical devices, cleanroom equipment
Anodizing	For aluminum, hard wear‑resistant layer	Aerospace, outdoor gear

Key Industries and Applications for Tubular Rivets

Because tubular rivets offer fast setting and reliable clamping, they are used across many manufacturing sectors. Nuote Metals has supplied these fasteners for the following applications.

Automotive Industry

Brake shoe and pad assemblies

Clutch facing attachments

Seat belt anchor points

Interior trim fastening

HVAC damper linkages

Furniture and Woodworking

Chair and table frame joints

Drawer slide riveting

Folding mechanism pivots

Upholstery tack strips

Consumer Goods and Luggage

Suitcase handle attachments

Laptop and tablet hinge assemblies

Kitchen appliance housings

Power tool casing rivets

Electronics and Electrical

Relay and switch terminals

Transformer core clamping

Battery pack connections

PCB support standoffs

Medical Devices

Orthopaedic brace pivots

Surgical instrument joints

Hospital bed adjustment mechanisms

Diagnostic equipment frames

Leather and Textile Products

Belt hole reinforcements

Bag and backpack strap attachments

Saddlery and equestrian hardware

Canvas and tarpaulin eyelet reinforcement

Advantages of Using Tubular Rivets

Why do manufacturers choose tubular rivets over solid rivets, blind rivets, or threaded fasteners? Nuote Metals highlights the following benefits.

Advantage	Explanation
Low installation force	30–60% less than solid rivets, reducing operator fatigue and tool wear
High‑speed setting	Automated systems can install 150–200 rivets per minute
Permanent joint	No thread loosening under vibration or cyclic loading
Clean appearance	Rolled tail is smooth and consistent, no sharp edges
Material savings	Hollow design uses less raw material than solid rivets
No secondary hardware	No washers, nuts, or lock washers required
Easy visual inspection	A properly formed roll is immediately visible

How to Select the Right Tubular Rivet for Your Assembly

Choosing the correct tubular rivets involves evaluating five key parameters.

1. Material Stack Thickness

Measure total thickness of all layers to be joined

For full tubular rivets: Length = stack thickness + 0.5–1.0 mm

For semi‑tubular rivets: Length = stack thickness + 0.8–1.2 × shank diameter

2. Load Requirements

Shear loads: Semi‑tubular rivets are preferred

Tensile (pull‑out) loads: Full tubular rivets with large flanges

Mixed loads: Semi‑tubular with truss head

3. Environmental Conditions

Indoor dry: Zinc‑plated steel

Outdoor humid: Stainless steel or anodized aluminum

Saltwater exposure: 316 stainless steel or brass

High temperature (over 150°C): Steel or stainless steel

4. Production Volume

Volume	Recommended Setting Method
Low (under 5,000)	Manual or pneumatic press
Medium (5,000–50,000)	Pneumatic or servo press
High (over 50,000)	Fully automatic riveting system

5. Hole Preparation Quality

Hole diameter should be 0.05–0.10 mm larger than rivet shank

Burr‑free holes prevent cracking during roll formation

Deburring both sides is recommended for materials over 1.5 mm thick

Installation Best Practices for Tubular Rivets

Proper setting is essential to achieve the performance expected from tubular rivets. Nuote Metals recommends the following process.

Step‑by‑Step Installation

Prepare the hole – Drill or punch to correct diameter; remove all burrs

Insert the rivet – Place the head against the accessible side, hollow tail protruding

Support the head – Use a flat or concave anvil that matches the head shape

Apply axial force – Use a rivet press, hammer tool, or automated setter

Observe the roll – The hollow tail should curl outward evenly without cracking

Verify the joint – The rolled head must be uniform and tightly contact the material

Common Installation Defects and Solutions

Defect	Likely Cause	Corrective Action
Cracked roll	Excessive force or rivet too hard	Reduce setting pressure; verify material hardness
Off‑center roll	Misaligned punch or bent rivet	Realign tooling; check rivet straightness
Insufficient roll	Rivet too short or force too low	Increase rivet length or setting pressure
Flattened roll	Force too high or anvil incorrect	Reduce force; use correct anvil profile
Split shank	Hole too small or rivet oversize	Verify hole diameter and rivet tolerance

Nuote Metals provides detailed setting charts and tooling recommendations for every rivet size and material combination.

【tubular rivets】FAQ – Common Questions Answered

Q1: What is the difference between tubular rivets and blind rivets (pop rivets)?

A: The most important difference is installation access. Tubular rivets require access to both sides of the joint: one side to support the head, the other to form the rolled tail. Blind rivets (often called pop rivets) are designed for single‑side installation: they are inserted from one side, and a mandrel is pulled through the body to expand the blind side. Tubular rivets generally provide higher shear strength and a cleaner finished appearance than blind rivets of the same diameter. However, if your assembly has enclosed sections where you cannot reach the back side, blind rivets are the only choice. Nuote Metals manufactures both product families. For open structures where two‑sided access exists, tubular rivets are typically more economical and faster to install in automated lines.

Q2: How do I calculate the correct tubular rivet length for my application?

A: The formula differs slightly between full tubular and semi‑tubular rivets. For full tubular rivets, use: Rivet Length = Material Stack Thickness + 0.5 to 1.0 mm. The extra length forms the rolled head. For example, joining two sheets with total thickness of 2.5 mm: select a rivet length of 3.0–3.5 mm. For semi‑tubular rivets, use: Rivet Length = Material Stack Thickness + 0.8 to 1.2 × Rivet Diameter. Example: 3.0 mm stack with 3.0 mm diameter rivet gives 3.0 + (1.0 × 3.0) = 6.0 mm length. The longer protrusion is needed because the hollow section is only at the tail, requiring more material to form a proper roll. Nuote Metals offers free length‑selection charts and sample kits to help you verify the correct size before full production.

Q3: Can tubular rivets be used with plastic or composite materials?

Yes, but with special attention to hole design and setting parameters. Tubular rivets work well with many engineering plastics (ABS, polycarbonate, nylon) and composite materials such as fiberglass or carbon fiber. However, these materials are more sensitive to clamping pressure and hole tolerance than metals. Nuote Metals recommends the following for plastic/composite assemblies:

Use a larger flange head (truss or flat head) to distribute clamping force

Increase hole diameter tolerance to 0.10–0.15 mm over rivet shank

Reduce setting force by 20–30% compared to steel‑on‑steel applications

For thin plastics (under 1.5 mm), consider using a backing washer or switching to semi‑tubular with shallow hollow depth

Always test on sample coupons before production

Nuote Metals can supply tubular rivets with optimized head geometries specifically for plastic and composite assembly.

Why Nuote Metals Is a Trusted Partner for Tubular Rivets

Manufacturing tubular rivets to consistent, high‑quality standards requires precision cold‑heading, controlled hollow‑depth forming, and rigorous quality assurance. Nuote Metals brings over two decades of experience to every order.

ISO 9001:2015 certified – Full traceability from raw material coil to finished packaging

In‑house tooling design – Custom head styles, hollow depths, and shoulder configurations developed in 10–15 days

Wide material range – Carbon steel, stainless steel, aluminum, brass, copper, and specialty alloys

Statistical process control (SPC) – Every batch is monitored for shank diameter, concentricity, head height, and hardness

Plating and coating in‑house – Zinc, nickel, tin, passivation, and anodizing under one roof

Packaging flexibility – Bulk boxes, tape‑and‑reel, stick feeding, or custom bags

Technical engineering support – Free application reviews, installation troubleshooting, and failure analysis

Whether your order is 5,000 or 5 million pieces, Nuote Metals delivers tubular rivets that meet your specification exactly.

Contact Nuote Metals for Your Tubular Rivets Requirements

From automotive brake assemblies to electronic device hinges, tubular rivets offer the ideal combination of fast installation, reliable clamping, and cost efficiency. Nuote Metals has the engineering knowledge, production capacity, and quality systems to support your project.

Contact Nuote Metals today:

🌐 Website: www.nuotemetal.com

📧 Email: info@notinmetal.com

📞 Phone: +86 13316629095

Request technical datasheets, free samples, or an engineering consultation. Let Nuote Metals help you improve your assembly line with precision‑made tubular rivets—engineered for speed, built for reliability.