Bulb Tite Rivets
Rivmate offers Bulb Tite rivets fitted with EPDM washers, featuring a wide clamping range. The three-lobe expansion design provides a larger bearing surface. This helps to reduce unit pressure and improves the reliability of fastening to soft materials, curved panels and sandwich panels.
- Large contact area on the back to prevent localized deformation.
- Resistant to tearing to prevent the soft material from being torn through.
- Can be used with EPDM sealing gaskets to provide moisture and water protection.
Why Choose Our Bulb Tite Rivets
- The "cracked" tail molding disperses the mandrel pressure bear-ing load /riveting load on rear plate.
- The mandrel pressure bearing load /riveting load are dispersedon rear plate, which provides the high mandrel retaining force.
- The retained mandrel can avoid damage, electric leakage or ma-rowak sound and other problems caused by falling off of the man-drel.
- Multi-grip property adaptable to the scope of width of sheet mate-rial thickness.
- As an ideal selection for sheet materials, it can provide high man-drel retaining force.
Rivmate —— Your Professional Customized Bulb Tite Rivets Manufacturer
Rivmate —— Your Professional Customized Bulb Tite Rivets Manufacturer offers more than just standard specifications. We also provide customized Bulb Tite Rivet solutions based on your drawings or samples.
We can help you select the appropriate Bulb Tite Rivet specifications and EPDM sealing washers based on your specific application. We also support sample testing, mass production, and OEM packaging.
Bulb Tite Rivets by Material
Aluminum has excellent natural rust resistance and does not rust as easily as ordinary carbon steel. For general outdoor applications, roofing, curtain walls, enclosures, and similar uses, aluminum-aluminum combinations are better suited for long-term exposure to the elements.
Aluminum body/Aluminum mandrel Bulb Tite Rivets
This material is the lightest, helping to reduce the overall weight of the structure. Additionally, aluminum offers good corrosion resistance, making it suitable for applications where weight, corrosion resistance, and panel protection are critical.
Bulb Tite Rivets by Size
Bulb Tite Rivets are available in a variety of diameters. Different sizes are suitable for different applications. Selecting the appropriate size for the specific application enhances the stability of the joint.
4.0mm Bulb Tite Rivets
This size is characterized by small hole diameters and relatively easy installation. It offers lower strength but is cost-effective. It is suitable for assembling lightweight, thin sheets.
4.8mm Bulb Tite Rivets
This size offers a moderate hole diameter and excellent versatility. It accommodates a wide range of panel thicknesses and is suitable for most thin panels and outdoor panels.
5.2mm Bulb Tite Rivets
This size is classified as medium-strength, offering greater joining strength than the 4.8mm size, with a riveting range of 1.3–19.1mm. It is suitable for medium-strength sheet metal and plate assemblies.
6.4mm Bulb Tite Rivets
This size is considered large-diameter. It is suited for preventing tear-through in thin sheets and for joining outdoor panels. It can be used with EPDM washer for waterproofing applications.
Bulb Tite Rivets by Head Type
Bulb Tite Rivets include Dome Head Bulb Tite Rivets and Large Flange Bulb Tite Rivets. Different head types are available for different applications.
Dome Head Bulb Tite Rivets
The round head is the most common and versatile type of head. It offers excellent versatility and installation compatibility, making it suitable for fastening most thin sheets, outdoor panels, metal enclosures, and vehicle panels.
Large Flange Bulb Tite Rivets
It provides the greatest load-bearing area on the front surface. This reduces edge damage around the holes and minimizes the risk of the panel being torn through or crushed. It is particularly suitable for thin panels, soft materials, and exterior wall panels.
| Type | Size | Product Code | Part Number | Hole Dia. (mm) | Grip Range (mm) | Tensile Strength (N) | Shear Strength (N) |
|---|---|---|---|---|---|---|---|
| 5.2 Aluminum Bulbtight Trifirm Rivet | 5.2*17.5 | AATFS6604-6-3W | AATFS52175 | 5.3-5.5 | 1.3-4.8 | 1800 | 2700 |
| 5.2 Aluminum Bulbtight Trifirm Rivet | 5.2*19.1 | AATFS6604-6-4W | AATFS52191 | 5.3-5.5 | 1.6-6.4 | 1800 | 2700 |
| 5.2 Aluminum Bulbtight Trifirm Rivet | 5.2*22.2 | AATFS6604-6-6W | AATFS52222 | 5.3-5.5 | 4.7-9.5 | 1800 | 2700 |
| 5.2 Aluminum Bulbtight Trifirm Rivet | 5.2*25.4 | AATFS6604-6-8W | AATFS52254 | 5.3-5.5 | 7.9-12.7 | 1800 | 2700 |
| 5.2 Aluminum Bulbtight Trifirm Rivet | 5.2*28.6 | AATFS6604-6-10W | AATFS52286 | 5.3-5.5 | 11.1-15.9 | 1800 | 2700 |
| 5.2 Aluminum Bulbtight Trifirm Rivet | 5.2*31.8 | AATFS6604-6-12W | AATFS52318 | 5.3-5.5 | 14.3-19.1 | 1800 | 2700 |
| 6.4 Aluminum Bulbtight Trifirm Rivet | 6.4*20.2 | AATFS6604-8-4W | AATFS64202 | 6.4-6.6 | 1.6-6.4 | 2500 | 3780 |
| 6.4 Aluminum Bulbtight Trifirm Rivet | 6.4*23.4 | AATFS6604-8-6W | AATFS64234 | 6.4-6.6 | 3.2-9.5 | 2500 | 3780 |
| 6.4 Aluminum Bulbtight Trifirm Rivet | 6.4*26.5 | AATFS6604-8-8W | AATFS64265 | 6.4-6.6 | 6.4-12.7 | 2500 | 3780 |
| 6.4 Aluminum Bulbtight Trifirm Rivet | 6.4*29.7 | AATFS6604-8-10W | AATFS64297 | 6.4-6.6 | 9.5-15.9 | 2500 | 3780 |
| 7.5 Aluminum Bulbtight Trifirm Rivet (Large Flange) | 7.5*28 | AATFS6605-9-6W | AATFSLF7528019 | 7.8-8.2 | 1.1-9.5 | 4400 | 5600 |
| 7.5 Aluminum Bulbtight Trifirm Rivet (Large Flange) | 7.5*34 | AATFS6605-9-10W | AATFSLF7534019 | 7.8-8.2 | 6.4-15.9 | 4400 | 5600 |
| 7.5 Aluminum Bulbtight Trifirm Rivet (Large Flange) | 7.5*37 | AATFS6605-9-12W | AATFSLF7537019 | 7.8-8.2 | 9.5-19.1 | 4400 | 5600 |
| 7.5 Aluminum Bulbtight Trifirm Rivet (Dome Head) | 7.5*28 | AATFS6603-9-6W | AATFS75280 | 7.8-8.2 | 0.8-9.5 | 4400 | 5600 |
| 7.5 Aluminum Bulbtight Trifirm Rivet (Dome Head) | 7.5*34 | AATFS6603-9-10W | AATFS75340 | 7.8-8.2 | 6.4-15.9 | 4400 | 5600 |
| 7.5 Aluminum Bulbtight Trifirm Rivet (Dome Head) | 7.5*37 | AATFS6603-9-12W | AATFS75370 | 7.8-8.2 | 9.5-19.1 | 4400 | 5600 |
Steps of Bulb Tite Rivets Installation
- Insert the rivet into the pre-drilled hole, ensuring that the rivet head sits flush against the workpiece.
- Place the rivet gun’s nozzle over the rivet mandrel and hold the tool vertically.
- Activate the rivet gun and pull the rivet mandrel to expand the rivet body and secure the workpiece.
- Once the rivet mandrel breaks off, the riveting is complete. Check that the rivet is secure and flush.
Why Choose Rivmate?
Rivmate operates a 40,000-square-meter manufacturing facility equipped with a comprehensive in-house production system. Our laboratory is equipped with projectors, tensile-shear testing machines, hardness testers, vision measurement systems, laser sorters, thickness gauges, and salt spray testers.
- Comply with ISO 9001
- IATF 16949 Quality Management
- EPDM Washer & Surface Treatment Options
Rivmate manufactures Bulb Tite Rivets. The rivets undergo quality sorting using an optical sorter. This process includes defect detection, dimensional sorting, and pre-packaging inspection.
Stable Bulk Supply for Bulb Tite Rivets
As a professional rivet manufacturer, Rivmate offers bulk supplies of Bulb Tite Rivets to HVAC fastener suppliers, vehicle accessory distributors, and industrial channel customers. We not only provide standard-sized Bulb Tite Rivets but can also customize production based on your sample drawings, along with matching EPDM sealing gaskets.
- Full-range supply support
- Direct from the factory, with ample stock
- OEM Packaging For Distributors
If you need Bulb Tite Rivets, please send us your drawings, samples, sheet thickness, hole diameter, washer requirements, and order quantity. Rivmate can help you find the right specifications and support sample testing and mass production.
Applications of Bulb Tite Rivets
Bulb Tite Rivets feature a large-area back-flare design, optional EPDM sealing gaskets, and a wide riveting range. They are suitable for a wide variety of riveting applications.
Metal Roofing Sheets
For metal roofing panels, BulbTite rivets provide strong blind-side support and enhance the resistance of thin sheets to pull-out forces. Where applications require enhanced moisture protection around the fastening points, we recommend using EPDM washers in conjunction with these rivets.
Truck & Trailer Bodies
Bulb Tite Rivets are a permanent single-sided riveting method. Bulb Tite Rivets provide stable blind-side support for side panels, roof panels and large sheet metal assemblies exposed to vibration and outdoor environments.
Containers & Transport Equipment
The three-lobed back of Bulb Tite Rivets provides a larger blind-side support area, making them ideal for the secure fastening of large, thin metal sheets. For transport equipment, container panels and metal enclosures, Bulb Tite Rivets help to mitigate the problem of insufficient support associated with standard rivets.
HVAC & Outdoor Enclosures
For HVAC enclosures, ventilation equipment, outdoor cabinets and metal enclosures, BulbTite rivets can be used in conjunction with EPDM gaskets, making them suitable for outdoor applications or environments prone to moisture.
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Where can I find a variety of bulb tite rivet sizes for sale?
You can source Bulb Tite Rivets in a variety of sizes from industrial fastening distributors, blind rivet manufacturers, B2B procurement platforms or local industrial hardware suppliers.
Rivmate offers a wide range of options, including various diameters, lengths, riveting ranges, head types, material combinations
We can also provide a complete riveting solution tailored to your specific application.
What materials are commonly used for manufacturing bulb tite rivets?
Aluminum body/Aluminum mandrel Bulb Tite Rivets.
What are the load-bearing capabilities of different bulb tite rivet types?
The larger the rivet diameter, the higher its tensile and shear strength.
The load-bearing capacity of Bulb Tite rivets is influenced by the rivet diameter, material combination, rivet head design, clamping range, and installation quality.
How does material thickness affect bulb tite rivet selection?
Material thickness determines the correct grip range for Bulb Tite Rivets.
When selecting Bulb Tite Rivets, it is essential to determine the total material thickness. If the riveting range is too short, it may affect the flatness of the back side. If the riveting range is too long, it may reduce the stability of the joint and increase the risk of loosening.
What factors contribute to the long-term durability of installed bulb tite rivets?
The durability of Bulb Tite Rivets depends not only on the rivets themselves but also on every step of the installation process.
Proper riveting parameters, a consistent bulb expansion profile, and precise hole dimensions all contribute to enhancing the reliability of the joint. For structures exposed to the elements over the long term, it is also important to ensure protection against moisture and rust.
What are the key features to compare when choosing bulb tite rivet suppliers?
You should focus on comparing the following aspects of suppliers:
1. Size range
2. Riveting range data
3. Material options
4. Head type options
5. EPDM sealing gasket options
6. Manufacturing capacity
7. Quality inspection processes
8. Application selection support
9. Sample testing capabilities
10. OEM packaging capabilities and batch supply stability.
A reliable Bulb Tite Rivets manufacturer should be able to assist in selecting the appropriate specifications based on the customer’s specific application.
Can I get custom-sized bulb tite rivets from vendors?
Customisation is available. You should prioritise blind rivet manufacturers with production, testing and sample development capabilities.
Rvimate, a manufacturer of Bulb Tite Rivets, can provide custom-sized Bulb Tite Rivets based on your drawings or samples.
Bulb Tite Rivets Performance Test Video
Let’s take a closer look at some of the performance tests for Bulb Tite Rivets in this video
Rivmate RivBulb Rivet: Tensile test
Rivmate RivBulb Rivet: Riveting test
Rivmate RivBulb Rivet: Mandrel retention test
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What is a Bulb Tite Rivet?
Bulb Tite Rivets consist of a rivet body, a mandrel, a rivet head, a shear point, and an optional EPDM sealing washer.
Compared to standard pop rivets, their most distinctive feature is that after riveting, the rivet tail forms a three-lobed bulb structure on the back of the workpiece.
This expanded bearing surface distributes the clamping load more evenly, effectively reducing the likelihood of tearing or perforation in thin sheets, plastic sheets, composite materials, and other brittle substrates.
How to choose the right bulb tite rivet for aluminum sheets?
1. First, confirm the total thickness of the aluminum sheet
You can’t just look at the thickness of a single layer of aluminum sheet. You need to consider the total thickness.
2. Selecting the Riveting Range Based on Aluminum Sheet Thickness
Different aluminum sheet thicknesses correspond to different riveting ranges.
3.Selecting the Rivet Diameter Based on Hole Size
Aluminum sheets are relatively soft; if the hole is too large, it can cause the rivet to wobble, result in an unstable seal from the washer, and lead to inconsistent forming on the reverse side.
4.Prefer the Aluminum / Aluminum material combination
The combination of an aluminum riveted body and an aluminum core rod offers better compatibility. Aluminum plates pair better with aluminum riveted bodies and are lighter in weight.
5.Select the head type based on the surface requirements of the aluminum sheet
Round heads are highly versatile, and their large flanges provide a larger load-bearing surface area. Countersunk heads require pre-drilled countersinks
6.For outdoor aluminum panels, we recommend using EPDM washers
For outdoor aluminum panel applications, when fastening points require additional moisture protection, we recommend using BulbTite rivets with EPDM washers. This significantly enhances water resistance.
What are the differences between bulb tite rivets and other blind rivets?
| Comparison Item | Bulb Tite Rivets | Standard Open-End Blind Rivets | Closed-End Blind Rivets | Peel Type Blind Rivets | Multi-Grip Blind Rivets | Structural Blind Rivets |
|---|---|---|---|---|---|---|
| Back-Side Formation | Three-petal / bulb-like large-area expansion | Standard bulge | Closed-end tail bulge | Petal-like split formation | Multiple bulge sections | Locked mandrel or high-strength bulge |
| Back-Side Support Area | Very large | Relatively small | Medium | Large | Medium to large | Medium to high |
| Pull-Through Resistance | Strong | Standard | Standard to medium | Suitable for soft materials | Good | Depends on the structure |
| Waterproof Performance | Can be used with an EPDM washer | Usually weaker | Good | Usually not the main feature | Standard | Depends on the structure |
| Thin Sheet Suitability | Highly suitable | General | General | Suitable for soft sheets, wood, and plastic | Suitable for variable sheet thicknesses | Depends on the specification |
| Curved / Irregular Surface Suitability | Highly suitable | General | General | General | General | Depends on the structure |
| Vibration Resistance | Good | Standard | Standard | Medium | Good | Strong |
| Typical Applications | Roofing, curtain walls, truck bodies, containers, outdoor enclosures | General sheet metal | Enclosures or containers requiring sealing | Wood, plastic, and soft materials | Sheet metal with multiple thickness ranges | High-strength structural fastening |
| Cost Level | Medium to high | Low | Medium | Medium | Medium | High |
| Key Selection Factors | Sheet thickness, hole size, washer, tool nosepiece | Diameter, length, material | Sealing performance, sheet thickness | Material hardness and softness | Grip range | Strength, locked mandrel, shear / tensile performance |
Limitations of Bulb Tite Rivets
- Relatively high cost
Bulb Tite Rivets have a more complex structure. They place higher demands on rivet body forming, mandrel fit, back-side stability, and washer assembly.
- Higher requirements for installation tools and rivet heads
Bulb Tite Rivets require a suitable riveting tool to form a stable three-lobed head
- An EPDM washer does not guarantee “absolute waterproofing.”
The sealing effectiveness depends on numerous factors, including pore size, washer dimensions, material surface, and the application environment. To achieve a high level of waterproofing, every step must be executed flawlessly.
- There must be sufficient clearance on the back side
The advantage of Bulb Tite Rivets lies in their three-lobed expansion structure on the back side. If there is insufficient clearance on the back side, expansion may be impeded, resulting in incomplete back-side support
How do bulb tite rivets compare to standard rivets in strength?
| Strength Factor | Standard Blind Rivets | Bulb Tite Rivets |
|---|---|---|
| Tensile Strength | Depends on material and diameter. Standard steel blind rivets may offer higher tensile strength in some specifications. | Depends on specification and material. They are not necessarily stronger than all standard blind rivets. |
| Shear Strength | Suitable for general sheet metal fastening. | Larger-diameter specifications can provide higher shear strength. |
| Pull-Through Resistance | General performance on thin sheets. | Stronger pull-through resistance, suitable for thin sheets and soft materials. |
| Blind-Side Support | Standard bulge with a smaller support area. | Three-petal large-area expansion provides a larger support area. |
| Load Distribution | Load is concentrated in a smaller area. | Clamping force is distributed more evenly. |
| Thin Sheet Performance | Easily affected by hole size and sheet material strength. | More suitable for thin sheets, aluminum sheets, and composite panels. |
| Outdoor Application | Additional sealing solutions are usually required. | Can be used with an EPDM washer. |
| Best Use | General sheet metal and low-cost fastening applications. | Roofing, curtain walls, truck bodies, containers, and outdoor enclosures. |