Hi-STRUCLOCK High-Strength Structural Blind Fastener Technical Datasheet
Product Overview
Hi-STRUCLOCK is a high-strength structural blind fasteners are heavy-duty, mechanical locking blind fasteners designed for applications requiring exceptionally high tensile strength, shear strength, vibration resistance, and permanent joint integrity. The unique mechanical locking mechanism ensures that the mandrel is positively retained within the fastener body, creating a secure, tamper-resistant connection suitable for structural applications.
Hi-STRUCLOCK fasteners provide a reliable alternative to conventional bolts, welding, and standard blind rivets, offering rapid installation, high clamp loads, and long service life. They are particularly suitable for demanding applications in renewable energy, transportation, mining, agriculture, heavy equipment, and structural fabrication.
ITEM CODE: 4031
Standards
As per manufacturer’s standard.
Dimensions
| Nominal Diameter | 4.8 | 6.4 | 8 | 10 | 12.7 |
| A max | 5.2 | 7 | 8.75 | 10.45 | 13.8 |
| B max | 7.4 | 9.7 | 12.4 | 14.7 | 19.2 |
| D max | 4.95 | 6.7 | 7.3 | 8.3 | 11.2 |
| Drill Diameter | 5.3-5.65 | 7.1-7.4 | 8.85-9.35 | 10.5-11.05 | 13.9-14.75 |
all dimensions in mm
Mechanical Properties
Steel/Steel
| Nominal Diameter | Tensile Strength Min. (kN) | Shear Strength Min. (kN) |
| 4.8 mm | 8 | 12.4 |
| 6.4 mm | 14.5 | 22.7 |
| 8.0 mm | 23.1 | 35.8 |
| 10.0 mm | 32.3 | 49.4 |
| 12.7 mm | 57.8 | 89.6 |
Material Characteristics and Recommended Applications
| Component | Standard Material | Optional Finish |
|---|---|---|
| Body | Low Carbon Steel | Zinc Plated |
| Mandrel | Medium Carbon Steel | Black Anti-Rust Finish |
| Material | Characteristics | Typical Applications |
|---|---|---|
| Zinc Plated Low Carbon Steel Body + Medium Carbon Steel Mandrel | High tensile strength, high shear strength, vibration resistance, economical | Mining equipment, solar structures, commercial vehicles, agricultural equipment, railways |
| Special Coated Steel (subject to availability) | Enhanced corrosion resistance | Outdoor structures, renewable energy installations |
Technical Specifications
| Feature | Description |
|---|---|
| Installation Access | One-side access |
| Locking Method | Positive mechanical lock |
| Vibration Resistance | Excellent |
| Tamper Resistance | Excellent |
| Clamp Force | High retained preload |
| Installation Time | Approximately 1 second |
| Re-tightening | Not required |
| Corrosion Protection | Zinc plated |
Applications
Multigrip Large Flange Blind Rivets are commonly used in:
- Solar tracker and mounting systems
- Renewable energy structures
- Mining equipment and crushers
- Agricultural machinery
- Commercial vehicles
- Electric vehicles
- Railways and metro systems
- Cellular communication towers
- Heavy fabrication
- Steel structures
- Material handling equipment
- Military and defense equipment
- Industrial machinery
- Storage and retrieval systems
Advantages
- Structural blind fastening system
- Extremely high tensile and shear strength
- Permanent mechanical locking mechanism
- Excellent vibration resistance
- High clamp load retention
- Tamper-resistant installation
- Rapid installation compared to bolts and welding
- No periodic re-tightening required
- Suitable for heavy-duty structural applications
- Reliable performance in harsh environments
- Installation possible from one side only
- Reduces assembly time and labor costs
Related Products
- Open End Blind Rivets
- Closed End Blind Rivets
- Multi-Grip Blind Rivets
- Monobolt Rivets
- Interlock Rivets
- High Strength Rivets
Frequently Asked Questions
What is a HORIZON Hi-STRUCLOCK Structural Blind Fastener?
Hi-STRUCLOCK is a heavy-duty mechanical locking blind fastener designed for applications requiring very high tensile strength, shear strength, vibration resistance, and permanent joint integrity.
How does Hi-STRUCLOCK differ from conventional blind rivets?
Unlike conventional blind rivets, Hi-STRUCLOCK fasteners use a positive mechanical locking system that permanently retains the mandrel, providing significantly higher strength and vibration resistance.
Can Hi-STRUCLOCK replace bolts and welding?
In many structural applications, Hi-STRUCLOCK can serve as an effective alternative to conventional bolts, lockbolts, and welded joints while offering faster installation and lower assembly costs.
Is Hi-STRUCLOCK suitable for high-vibration applications?
Yes. The mechanical locking mechanism and high retained clamp force make Hi-STRUCLOCK particularly suitable for mining equipment, commercial vehicles, railways, agricultural machinery, and heavy industrial equipment.
Does Hi-STRUCLOCK require access from both sides?
No. Hi-STRUCLOCK is a blind fastener and requires access from only one side of the assembly.
No. Hi-STRUCLOCK is a blind fastener and requires access from only one side of the assembly.
Trifold rivets are commonly used to join plastics, fiberglass, composites, aluminum sheets, insulation panels, and other low-strength materials.
Are special installation tools required?
Yes. Hi-STRUCLOCK fasteners require compatible hydraulic or pneumatic installation tools designed for structural blind fasteners.
Does the fastener require periodic tightening?
No. Once installed, the mechanical locking system provides permanent retention and does not require periodic re-tightening.
Comparable Structural Blind Fastener Systems
| Horizon Inc Product | Comparable Products |
|---|---|
| Hi-STRUCLOCK | Avdel® Avbolt®, Huck® Magna-Lok®, Gesipa® Bulb-Tite® |
Hi-STRUCLOCK is a product series designation used by Horizon Inc.
Technical Disclaimer
The technical information, specifications, dimensions, mechanical properties, drawings, and performance data provided on this website are intended for general reference and engineering guidance only. Values shown are representative of products manufactured under normal production conditions and may vary depending on material grade, manufacturing tolerances, installation method, application, and operating environment.
While Horizon Inc. makes every reasonable effort to ensure the accuracy of the information provided, we make no warranties, express or implied, regarding its completeness, accuracy, or suitability for any particular purpose. Customers are responsible for verifying that the selected product is appropriate for their specific application and operating conditions. Where safety, structural integrity, or regulatory compliance is critical, independent engineering evaluation and product testing should be performed.
Horizon Inc. reserves the right to modify product specifications, dimensions, materials, and technical data without prior notice.
To the fullest extent permitted by applicable law, Horizon Inc. shall not be liable for any direct, indirect, incidental, consequential, or special damages arising from the use of, or reliance upon, the information contained on this website.
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