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Bulb Tite Blind Rivet - Durable, Versatile Fastening Solution

Gentle Grip, Maximum Strength: The Ultimate Tri-Fold Expansion Technology for Brittle & Thin Materials with 800+ Tons Monthly Supply Reliability.

  • Product name Bulb Tite Blind Rivet
  • Other Names Tri-fold blind rivet / Lantern blind rivet
  • Material High-grade Aluminum Alloy (Body & Mandrel)
  • Head Style Dome Head / Large Flange
  • Expansion Type Unique Tri-Fold (Three legs) "Bulb" expansion
  • Waterproof Optional EPDM washer for superior sealing
  • Standard International Blind Rivet Specifications
  • Feature Large bearing area prevents pull-through in soft materials
  • Brand Fasto
  • Place of Origin Tianjin,China

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:

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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:

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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.

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Why Choose Fasto for Bulb Tite Blind Rivets:

1. Reliable Factory Quality
With decades of professional fastener manufacturing experience, Fasto implements strict quality control for every bulb tite rivet batch. All products comply with standard industrial specifications, featuring stable clamping force, precise expansion performance and zero defective rate in mass delivery.
2. Full Product Range & Customization
We supply complete series of bulb tite rivets, including aluminum-aluminum, aluminum-steel, full stainless steel and EPDM sealed types. Custom sizes, special coatings and high-temperature resistant versions are available to match diverse application scenarios.
3. Excellent Material & Structural Stability
Adopting high-purity raw materials, our rivets expand evenly without cracking or deformation. The locked mandrel design ensures superior vibration resistance and durability, perfectly fitting construction, automotive, marine and industrial long-term use.
4. Cost-Effective Factory Direct Supply
Direct factory output eliminates middleman markup. We offer competitive bulk pricing and flexible MOQ, supporting small trial orders and large-scale project procurement to lower your overall purchasing cost.
5. Strict Testing & Certification Support
All rivets pass professional tensile, shear and sealing performance tests. We can provide relevant quality certificates and test reports to meet B2B project inspection and import standard requirements.
6. Professional One-Stop Service
We provide professional technical consultation, fast sample delivery, stable production capacity and timely after-sales support. Efficient response and on-time shipment ensure smooth and worry-free cooperation for global clients.

FAQ:

Q1: What is the biggest advantage of bulb tite blind rivets?
A1: It forms a large three-lobe clamping area on the blind side, disperses pressure evenly, and never crushes thin, soft or brittle substrates compared with standard blind rivets.
Q2: Are bulb tite rivets waterproof?
A2: Standard types are regular fastening rivets. Versions fitted with EPDM rubber washers provide effective waterproof and airtight sealing for outdoor and enclosure applications.
Q3: Can these rivets join different materials?
A3: Yes. They work perfectly for dissimilar material bonding, including metal to plastic, PVC, fiberglass, acrylic, wood and composite panels without substrate damage.
Q4: Where should stainless steel bulb tite rivets be used?
A4: Full stainless steel versions are ideal for marine, chemical and coastal outdoor environments to resist rust and corrosion.
Q5: What thickness of materials cannot be riveted?
A5: They are not suitable for ultra-thin substrates below 0.4mm steel sheet and 0.5mm aluminum sheet to avoid fastening failure.
Q6: Are they suitable for high-vibration working conditions?
A6: Yes. The locked mandrel structure delivers stable tensile and shear strength, effectively preventing loosening under long-term vibration for vehicles and mechanical equipment.

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