Codbolt Exclusive Solutions
Mechanical expansion fastener for joining metal plates and profiles.
FEATURES AND ADVANTAGES
- Fastener consisting of a fully threaded screw, structural flat washer, metal sleeve with a hexagonal counter nut, and a specially designed cone featuring a guiding system.
- Innovative product for fastening and connecting metal elements - simple installation.
- Suitable for installations where access is restricted (access from one side only)
- Easy application in tubular, square and different hollow steel sections, with an
excellent finish. - High performance in tensile and shear stresses
- Eliminates the use of welding
- There is no need for specialized labor or specific work permits, as installation only requires hand tools
MAIN APPLICATIONS
- Fixing façades, guardrails and handrails to metal structures
- Various connections of elements in structures where access is difficult for conventional assembly (through bolt and nut)
- Connection with existing structures to create reinforcement elements (retrofit)
JOINING PLATES AND PROFILES USING EXPANSION FASTENERS
With the growing evolution of construction methods for steel structures and the constant innovation of architectural designers, there is a need for specific fastening systems to anchor metal structures to different types of base materials, such as solid concrete, ceramic blocks and bricks. The Codbolt system was developed to meet the demands and needs of the market for joining elements in metal structures (tubular profiles, square profiles or even in situations where it is not possible to access the other side of the structure to make a conventional joint).
SYSTEM COMPONENTS
Grade 5 bolt -
Minimum Tensile strength: 828 N/mm²
Minimum Yield strength: 635 N/mm².
Metal sleeve and expander cone - Low carbon steel material.
Structural flat washer - Medium carbon steel material according to ASTM F436.
SYSTEM DETAILS
The system consists of joining metal elements using the mechanical expansion fastener by the accommodation method, i.e. the metal Sleeve expands to a larger size than the nominal size of the hole by displacing the cone, generating an anchor point.
PATENTS GRANTED
- USA - "PATENT 9 803 673"
- EUROPE - "PATENT 3 012 469" AND
- RPC (CHINA INTELLECTUAL PROPERTY OFFICE) - PATENT ZL 2015 2 0815301.X
- BRAZIL (REQUESTED) - "PAT.REQ PI 202014026188-0"
CODBOLT - STANDARD
Bolt grade 5: Tensile strength 828 N/mm²
Yield strength: 635 N/mm²
Sleeve and cone: Carbon steel
Structural washer: Carbon steel (ASTM F436)
| Code | Bolt (in) | Sleeve | Plate (mm) | Distances (mm) |
Tightening torque (kgf.m) |
Permissible loads (kgf)* | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Body | Hexagonal | ||||||||||||||
| Diameter D | Length L |
Wrench SW |
Diam. D1 (in) |
Length L1 (mm) |
Height h1 (mm) |
Wrench SW1 (in) |
Hole diam. |
Permissible thickness to be fixed - th | Fastener Fastener S |
Fastener Edge Ed |
Tensile | Shear | |||
| Min. | Max. | ||||||||||||||
| CDB38212GF | 3/8" | 2.1/2" | 9/16″ | 9/16″ | 38 | 8,2 | 3/4″ | 14,5 | 12 | 26 | 50 | 30 | 4 | 750 | 1.200 |
| CDB12300GF | 1/2" | 3” | 3/4″ | 3/4″ | 42 | 8,4 | 1.3/16″ | 20 | 14 | 32 | 58 | 35 | 10 | 1.900 | 1.960 |
| CDB58312GF | 5/8" | 3.1/2" | 15/16″ | 7/8″ | 50 | 9,7 | 1.5/16″ | 24 | 17 | 40 | 67 | 40 | 20 | 2.000 | 2.750 |
| CDB34412GF | 3/4" | 4.1/2" | 1.1/8″ | 1″ | 70 | 13,5 | 1.5/8″ | 27 | 20 | 58 | 76 | 44 | 35 | 2.140 | 4.037 |
For more information, please contact the Technical Department.
CODBOLT - ATC
Bolt grade 5: Tensile strength 828 N/mm²
Yield strength: 635 N/mm²
Sleeve and cone: Carbon steel
Structural washer: Carbon steel (ASTM F436)
Thickness variation device: Carbon steel
| Code | Bolt (in) | Sleeve | DTV - Thickness variation device (mm) | Plate (mm) | Distances (mm) |
Tightening torque (kgf.m) |
Permissible loads (kgf)* | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Body | Hexagonal | |||||||||||||||
| Diameter D | Length L |
Wrench SW |
Diam. D1 (in) |
Length L1 (mm) |
Height h1 (mm) |
Wrench SW1 (in) |
Height h2 |
Diam. D2 |
Hole diam. |
Maximum thickness to be fixed - E | Fastener Fastener S |
Fastener Edge Ed |
Tensile | Shear | ||
| CDB38212GFATC | 3/8" | 2.1/2" | 9/16″ | 9/16″ | 38 | 8,2 | 3/4″ | 4 | 25 | 14,5 | 21 | 50 | 30 | 4 | 750 | 1.200 |
| CDB12300GFATC | 1/2" | 3” | 3/4″ | 3/4″ | 42 | 8,4 | 1.3/16″ | 8 | 38 | 20 | 24 | 58 | 35 | 10 | 1.900 | 1.960 |
| CDB58312GFATC | 5/8" | 3.1/2" | 15/16″ | 7/8″ | 50 | 9,7 | 1.5/16″ | 10 | 41 | 24 | 30 | 67 | 40 | 20 | 2.000 | 2.750 |
| CDB34412GFATC** | 3/4" | 4.1/2" | 1.1/8″ | 1″ | 70 | 21 | 1.5/8″ | 21 | 41 | 27 | 40 | 76 | 44 | 35 | 2.140 | 4.037 |
**Model with integrated high nut system as thickness variation device.
For further information, please contact the Technical Department.
APPLICATION METHOD
- Drill the hole with the indicated diameter
- Insert the Codbolt into the hole, passing through the plate and the profile
- Use one wrench to hold the hexagon of the sleeve and use another to torque the bolt
- When the bolt is torqued, the cone is raised, causing the sleeve to expand, locking the plate or beam to the hollow profile
- Once the torque has been completed, a clamping action is established between the plate and the profile, forming a secure connection with a bolt finish
