Hook Non-Insulated Terminal
Hook Non-Insulated Terminal
TONFUL HNB hook non-insulated terminals combine a curved hook contact with a crimp barrel. Review the bolt reference, conductor range and dimensions for your installation.
- HNB series · 13 original catalog models
- Tin-plated copper · non-insulated construction
- Model-specific wire range and dimensions
- Product selection, samples and packaging reviewed with your enquiry
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Overview
TONFUL HNB hook non-insulated terminals combine a curved hook contact with a crimp barrel. Review the bolt reference, conductor range and dimensions for your installation. The original catalog includes 13 models; all model references and table values are retained below.
The terminal is non-insulated. Confirm insulation or enclosure requirements for the completed assembly against the application and approved design.
Features
- Tin-plated copper: material and finish retained from TONFUL’s original product information.
- Curved hook interface: match the contact geometry to your installation.
- Crimp connection: select tooling appropriate for the conductor and barrel.
- Model-specific dimensions: 13 original catalog models available for comparison.
Technical Specifications
| Parameter | Specification |
|---|---|
| Series | HNB |
| Contact material | Copper |
| Plating | Tin |
| Insulation | Non-insulated |
| Interface | curved hook |
| Catalog models | 13 |
| Wire range and dimensions | See model-specific catalog tables below |
Where listed, current values apply to the catalog group, not every installation. Confirm voltage, temperature, environmental conditions and required documentation for your selected model.
Dimension
Dimensions are in millimeters unless otherwise indicated. Original model numbers, units and values are preserved. On small screens, scroll each table horizontally.
HNB Catalog Group 1
Terminal Material: Copper Plating: Tin Cable size: 0.5-1.5mm²(A.W.G.22-16) Max Current: Imax=19A Thickness: 0.7mm
| Item NO. | USA Bolt No. | Bolt dia d2(mm) | Dimension(mm) | |||||
|---|---|---|---|---|---|---|---|---|
| B | F | L | E | DΦ | dΦ | |||
| HNB1.25-3.5 | #6 | 3.7 | 8.0 | 7.0 | 15.8 | 4.8 | 3.4 | 1.7 |
| HNB1.25-4 | #8 | 4.3 | 8.0 | 7.0 | 15.8 | |||
| HNB1.25-5 | #10 | 5.3 | 8.0 | 7.0 | 15.8 | |||
| HNB1.25-6 | 1/4 | 6.5 | 11.6 | 11.0 | 21.8 | |||
HNB Catalog Group 2
Terminal Material: Copper Plating: Tin Cable size: 1.5-2.5mm²(A.W.G.16-14) Max Current: Imax=27A Thickness: 0.8mm
| Item NO. | USA Bolt No. | Bolt dia d2(mm) | Dimension(mm) | |||||
|---|---|---|---|---|---|---|---|---|
| B | F | L | E | DΦ | dΦ | |||
| HNB2-3.5 | #6 | 3.7 | 8.5 | 7.4 | 16.8 | 4.8 | 4.1 | 2.3 |
| HNB2-4 | #8 | 4.3 | 8.5 | 7.4 | 16.8 | |||
| HNB2-5 | #10 | 5.3 | 9.5 | 7.3 | 16.8 | |||
| HNB2-6 | 1/4 | 6.5 | 12.0 | 11.0 | 21.8 | |||
HNB Catalog Group 3
Terminal Material: Copper Plating: Tin Cable size:4.0-6.0mm²(A.W.G.12-10) Max Current:Imax=48A Thickness:1.0mm
| Item NO. | USA Bolt No. | Bolt dia d2(mm) | Dimension(mm) | |||||
|---|---|---|---|---|---|---|---|---|
| B | F | L | E | DΦ | dΦ | |||
| HNB5.5-3.5 | #6 | 3.7 | 7.2 | 6.1 | 15.7 | 6.0 | 5.6 | 3.4 |
| HNB5.5-4 | #8 | 4.3 | 9.5 | 9.5 | 19.8 | |||
| HNB5.5-5 | #10 | 5.3 | 9.5 | 9.5 | 19.8 | |||
| HNB5.5-6 | 1/4 | 6.5 | 12.0 | 10.3 | 22.5 | |||
| HNB5.5-8 | 5/16 | 8.5 | 15.0 | 13.5 | 27.0 | |||

Selection Guide
Check the listed wire range and bolt diameter d2, then compare hook width B and overall length L with the receiving connection. Confirm orientation and retention against your drawing or sample.
Use an appropriate non-insulated-terminal crimp tool. Confirm crimp settings, pull-out retention, inspection criteria and any required insulation before approving production.
Applications
Potential uses include equipment and control wiring with a compatible hook-contact screw connection. Product compatibility and qualification depend on the selected model and the approved assembly.
Ordering Information
Send the complete HNB model number, conductor size, mating-interface details, application and order quantity. Include your sample, inspection and packaging requirements.
Explore TONFUL terminals and connectors or contact TONFUL Electric to discuss the selected model.
Product photographs are high-definition illustrative recreations of the original images. Confirm product configuration against an approved sample.




