Bulb Tite Blind Rivet - Durable, Versatile Fastening Solution
Fasto Bulb Tite Blind Rivet also known as tri-fold or lantern blind rivet. Its standout feature is the slotted body splitting into three star-shaped feet when the mandrel is pulled, forming a broad bulb-shaped anchor on the hidden side. Below is practical sales copy suitable for overseas buyers, covering product strengths, material choices, usage scenarios and concise listing text.
Specification:

| Diameter (mm) | Hole Size (mm) | Grip Range (mm) | Flange Dia (mm) | Shear Strength |
|---|---|---|---|---|
| 4.8 mm | 5.0 - 5.2 | 1.0 - 12.0 | 9.5 mm | 1800 N |
| 5.2 mm | 5.3 - 5.5 | 1.5 - 15.0 | 12.0 mm | 2200 N |
| 6.3 mm | 6.5 - 6.8 | 2.0 - 18.0 | 14.0 mm | 3100 N |
| Body | Mandrel | |
|---|---|---|
| Material | Aluminum Alloy | Aluminum Alloy |
| Finish | Polished | Polished |
Aluminum Alloy/Aluminum Alloy
| Diameter(D) | Length(L) | Grip Range | Length(L) | Grip Range | Shear | ||||
| mm | mm | inch | inch | N | Ibs | N | Ibs | ||
|
4.0mm(5/32'') φ4.2-4.5(.165-.177) |
13.6 | 1.0-3.0 | .535 | 9/16 | 0.04-0.12 | 600 | 135 | 1000 | 225 |
|
4.0mm(5/32'') φ4.2-4.5(.165-.177) |
18.8 | 1.0-7.0 | .740 | 3/4 | 0.04-0.28 | 600 | 135 | 1000 | 225 |
|
4.0mm(5/32'') φ4.2-4.5(.165-.177) |
20.5 | 1.0-8.5 | .807 | 13/16 | 0.04-0.33 | 600 | 135 | 1000 | 225 |
|
4.0mm(5/32'') φ4.2-4.5(.165-.177) |
25.2 | 5.0-12.0 | .992 | 1 | 0.20-0.47 | 600 | 135 | 1000 | 225 |
|
4.8mm(3/6'') φ5.0-5.25(.197-.207) |
16.0 | 1.0-4.0 | .630 | 5/8 | 0.04-0.16 | 780 | 175 | 1070 | 240 |
|
4.8mm(3/6'') φ5.0-5.25(.197-.207) |
21.0 | 1.0-9.0 | .827 | 13/16 | 0.04-0.35 | 780 | 175 | 1070 | 240 |
|
4.8mm(3/6'') φ5.0-5.25(.197-.207) |
24.0 | 4.0-12.0 | .945 | 15/16 | 0.16-0.47 | 780 | 175 | 1070 | 240 |
Application:

1. Construction & Building Facade
Ideal for fastening metal roof panels, exterior wall cladding, thermal insulation sandwich panels, skylights and rain screen systems. It is widely applied to fix fascia boards, gutters, flashing plates and exterior decorative components. It also suits the assembly of ceiling frames, partition frames, outdoor billboards and light boxes, as well as panel installation for modular houses and container houses.
2. Commercial Vehicle & RV
Suitable for assembly of refrigerated truck bodies, van cargo panels, bus and RV exterior skins. It is used for fixing vehicle interior trims, dashboards, wheel arch liners and heat shields, and perfectly matches the modification and assembly of trailers and camper shells.
3. Industrial Fabrication & Electrical & HVAC
Applicable to cabinet enclosures, equipment housings, ventilation duct flanges and mechanical protective guards. It performs excellently in joining dissimilar materials, including metal bonded with plastic, PVC, wood, MDF, fiberglass and acrylic. Sealed versions with gaskets are designed for outdoor electrical boxes and HVAC equipment to meet dustproof and waterproof requirements.
4. Marine, Railway & Agricultural Machinery
Stainless steel bulb tite rivets feature superior corrosion resistance, suitable for marine accessories and ship cabinet assembly. They are widely used for railway vehicle interior parts and luggage rack brackets, and also applicable to fixing thin sheet covers and safety guards of agricultural machinery.
5. Hardware & Light Industry
Commonly adopted for the production and assembly of outdoor furniture, metal storage cabinets, retail display shelves, toolboxes and various equipment shells.
6. Lightweight Equipment
Perfect for fastening UAV composite shells and lightweight equipment brackets. With low clamping pressure, it will not damage carbon fiber and other fragile composite materials.



