HOONSUN Stainless Steel Connector Series: High-Protection Industrial Solutions
In industrial automation, rail transit, marine engineering, new energy equipment and other fields, the stability of connectors directly determines equipment safety and service life. HOONSUN Connector Co., Ltd. specializes in the R&D and production of stainless steel connectors. With high-quality 304/316L stainless steel materials, precision processing technology and high protection performance, the company provides reliable connection solutions for various harsh working conditions. This article details HOONSUN’s stainless steel product series, specifications and selection guide to help users quickly match their needs.
1. HOONSUN Stainless Steel Connector Product Series
HOONSUN’s stainless steel products mainly include stainless steel cable glands, stainless steel fixed heads, stainless steel explosion-proof connectors and stainless steel cable connectors. They are widely used in waterproof, dustproof, anti-corrosion, explosion-proof and anti-vibration applications.
1.1 Stainless Steel Cable Glands (Cable Fixed Heads)
Precision machined from 304/316L stainless steel with high strength and strong corrosion resistance. Equipped with high-quality rubber sealing rings to achieve IP67/IP68 high protection grade. Suitable for outdoor equipment, distribution boxes, mechanical equipment, control cabinets, etc.
1.2 316L Marine Grade Stainless Steel Connectors
Specially designed for marine environments, ships, offshore wind power and chemical corrosive environments. Resistant to salt spray, acid and alkali, anti-aging, no rust or brittleness during long-term use.
1.3 Explosion-Proof Stainless Steel Cable Connectors
Comply with explosion-proof standards, suitable for flammable and explosive environments such as petroleum, chemical industry, natural gas and mines. Provide multiple functions including explosion-proof, waterproof, dustproof and tensile resistance.
1.4 Custom Non-Standard Stainless Steel Connectors
Support customization of threads, lengths, clamping ranges and special structures to meet personalized requirements of equipment manufacturers.
2. HOONSUN Stainless Steel Product Specification Table
2.1 Material & Protection Parameters
| Item | Specification |
| Product Material | 304 Stainless Steel / 316L Stainless Steel |
| Protection Grade | IP67 / IP68 |
| Temperature Range | -40℃ ~ +110℃ |
| Sealing Material | NBR / Silicone Rubber |
| Thread Type | Metric M / PG / NPT / G Thread |
| Explosion-Proof Grade | Ex d IIC / Ex e II T6 (Optional) |
| Salt Spray Test | 304: Over 480hrs; 316L: Over 1000hrs |
| Applicable Cables | Round rubber cables, silicone cables, shielded cables, etc. |
2.2 Metric M Series Specification Table
| Model | Thread | Cable Clamping Range (mm) | Reaming Diameter (mm) |
| M12 | M12×1.5 | 3~7 | 10.5 |
| M16 | M16×1.5 | 5~10 | 14 |
| M20 | M20×1.5 | 6~12 | 18 |
| M22 | M22×1.5 | 8~14 | 20 |
| M25 | M25×1.5 | 9~16 | 22 |
| M32 | M32×1.5 | 13~20 | 29 |
| M40 | M40×1.5 | 17~26 | 36 |
| M50 | M50×1.5 | 23~34 | 45 |
| M63 | M63×1.5 | 29~42 | 57 |
2.3 PG Series Specification Table
| Model | Thread | Cable Clamping Range (mm) | Reaming Diameter (mm) |
| PG7 | PG7 | 3~6 | 11 |
| PG9 | PG9 | 4~8 | 14 |
| PG11 | PG11 | 5~10 | 17 |
| PG13.5 | PG13.5 | 6~12 | 20 |
| PG16 | PG16 | 8~14 | 23 |
| PG21 | PG21 | 10~16 | 28 |
| PG29 | PG29 | 14~22 | 36 |
2.4 NPT Thread Specification Table
| Model | Thread | Cable Clamping Range (mm) |
| NPT1/8 | 1/8" NPT | 2~5 |
| NPT1/4 | 1/4" NPT | 3~7 |
| NPT3/8 | 3/8" NPT | 5~10 |
| NPT1/2 | 1/2" NPT | 8~14 |
| NPT3/4 | 3/4" NPT | 12~18 |
| NPT1 | 1" NPT | 16~24 |
3. Selection Comparison Table
3.1 Selection by Application Environment
| Application Environment | Recommended Material | Recommended Product Series |
| General indoor/outdoor environment | 304 Stainless Steel | Standard Stainless Steel Cable Glands |
| High humidity, dusty, outdoor equipment | 304 Stainless Steel | IP68 Waterproof Stainless Steel Connectors |
| Seaside, ships, offshore wind power | 316L Stainless Steel | Marine Anti-Corrosion Stainless Steel Connectors |
| Chemical, acid & alkali corrosive environment | 316L Stainless Steel | High Corrosion-Resistant Stainless Steel Fixed Heads |
| Petroleum, chemical, explosive areas | 304/316L Stainless Steel | Explosion-Proof Stainless Steel Cable Connectors |
| Rail transit, new energy vehicles | 304/316L Stainless Steel | High Vibration-Resistant Stainless Steel Connectors |
3.2 Selection by Thread Type
| Equipment Interface | Thread Type | Applicable Industries |
| Domestic control cabinets & distribution boxes | Metric M Thread | Machinery, automation, power |
| European imported equipment | PG Thread | Machine tools, instruments, industrial control |
| American equipment & export to North America | NPT Thread | Shipbuilding, hydraulic, petroleum |
| Low-voltage electrical & waterproof boxes | G Thread | Water treatment, outdoor lighting |
3.3 Selection by Protection Grade
| Application Scenario | Protection Grade | Product Features |
| Indoor dustproof & splash-proof | IP67 | Daily protection, cost-effective |
| Outdoor rain & immersion | IP68 | Short-term immersion, long-term waterproof |
| Underwater equipment & submersible pumps | Deep Water IP68 | Stronger sealing, higher pressure resistance |
4. Product Advantages
- High-quality stainless steel material: 304/316L forged material with high strength, deformation resistance and corrosion resistance.
- High protection grade: IP67/IP68 waterproof and dustproof, adaptable to harsh outdoor environments.
- Precision machining: High-precision threads, smooth installation, no slipping or jamming.
- Strong anti-vibration & tensile performance: Stable clamping structure, not easy to loosen under equipment vibration.
- Multiple international certifications: CE, RoHS, explosion-proof certification, suitable for global export.
- Support non-standard customization: Custom sizes, lengths and structures according to customer drawings.
5. Application Industries
Rail transit and high-speed rail equipment
New energy vehicles and charging piles
Wind power and photovoltaic equipment
Shipbuilding and marine engineering
Petroleum, chemical and explosion-proof equipment
Industrial automation and machinery
Outdoor lighting and municipal engineering
Sewage treatment and environmental protection equipment
6. Conclusion
HOONSUN Connector Co., Ltd. always takes quality as the core and focuses on the R&D and production of stainless steel connectors, providing industrial users with stable, durable and high-protection connection solutions. Whether in conventional working conditions or harsh environments, HOONSUN stainless steel products can meet the needs of long-term reliable operation of equipment, making it the preferred brand for industrial connections.
In industrial automation, rail transit, marine engineering, new energy equipment and other fields, the stability of connectors directly determines equipment safety and service life. HOONSUN Connector Co., Ltd. specializes in the R&D and production of stainless steel connectors. With high-quality 304/316L stainless steel materials, precision processing technology and high protection performance, the company provides reliable connection solutions for various harsh working conditions. This article details HOONSUN’s stainless steel product series, specifications and selection guide to help users quickly match their needs.
1. HOONSUN Stainless Steel Connector Product Series
HOONSUN’s stainless steel products mainly include stainless steel cable glands, stainless steel fixed heads, stainless steel explosion-proof connectors and stainless steel cable connectors. They are widely used in waterproof, dustproof, anti-corrosion, explosion-proof and anti-vibration applications.
1.1 Stainless Steel Cable Glands (Cable Fixed Heads)
Precision machined from 304/316L stainless steel with high strength and strong corrosion resistance. Equipped with high-quality rubber sealing rings to achieve IP67/IP68 high protection grade. Suitable for outdoor equipment, distribution boxes, mechanical equipment, control cabinets, etc.
1.2 316L Marine Grade Stainless Steel Connectors
Specially designed for marine environments, ships, offshore wind power and chemical corrosive environments. Resistant to salt spray, acid and alkali, anti-aging, no rust or brittleness during long-term use.
1.3 Explosion-Proof Stainless Steel Cable Connectors
Comply with explosion-proof standards, suitable for flammable and explosive environments such as petroleum, chemical industry, natural gas and mines. Provide multiple functions including explosion-proof, waterproof, dustproof and tensile resistance.
1.4 Custom Non-Standard Stainless Steel Connectors
Support customization of threads, lengths, clamping ranges and special structures to meet personalized requirements of equipment manufacturers.
2. HOONSUN Stainless Steel Product Specification Table
2.1 Material & Protection Parameters
| Item | Specification |
| Product Material | 304 Stainless Steel / 316L Stainless Steel |
| Protection Grade | IP67 / IP68 |
| Temperature Range | -40℃ ~ +110℃ |
| Sealing Material | NBR / Silicone Rubber |
| Thread Type | Metric M / PG / NPT / G Thread |
| Explosion-Proof Grade | Ex d IIC / Ex e II T6 (Optional) |
| Salt Spray Test | 304: Over 480hrs; 316L: Over 1000hrs |
| Applicable Cables | Round rubber cables, silicone cables, shielded cables, etc. |
2.2 Metric M Series Specification Table
| Model | Thread | Cable Clamping Range (mm) | Reaming Diameter (mm) |
| M12 | M12×1.5 | 3~7 | 10.5 |
| M16 | M16×1.5 | 5~10 | 14 |
| M20 | M20×1.5 | 6~12 | 18 |
| M22 | M22×1.5 | 8~14 | 20 |
| M25 | M25×1.5 | 9~16 | 22 |
| M32 | M32×1.5 | 13~20 | 29 |
| M40 | M40×1.5 | 17~26 | 36 |
| M50 | M50×1.5 | 23~34 | 45 |
| M63 | M63×1.5 | 29~42 | 57 |
2.3 PG Series Specification Table
| Model | Thread | Cable Clamping Range (mm) | Reaming Diameter (mm) |
| PG7 | PG7 | 3~6 | 11 |
| PG9 | PG9 | 4~8 | 14 |
| PG11 | PG11 | 5~10 | 17 |
| PG13.5 | PG13.5 | 6~12 | 20 |
| PG16 | PG16 | 8~14 | 23 |
| PG21 | PG21 | 10~16 | 28 |
| PG29 | PG29 | 14~22 | 36 |
2.4 NPT Thread Specification Table
| Model | Thread | Cable Clamping Range (mm) |
| NPT1/8 | 1/8" NPT | 2~5 |
| NPT1/4 | 1/4" NPT | 3~7 |
| NPT3/8 | 3/8" NPT | 5~10 |
| NPT1/2 | 1/2" NPT | 8~14 |
| NPT3/4 | 3/4" NPT | 12~18 |
| NPT1 | 1" NPT | 16~24 |
3. Selection Comparison Table
3.1 Selection by Application Environment
| Application Environment | Recommended Material | Recommended Product Series |
| General indoor/outdoor environment | 304 Stainless Steel | Standard Stainless Steel Cable Glands |
| High humidity, dusty, outdoor equipment | 304 Stainless Steel | IP68 Waterproof Stainless Steel Connectors |
| Seaside, ships, offshore wind power | 316L Stainless Steel | Marine Anti-Corrosion Stainless Steel Connectors |
| Chemical, acid & alkali corrosive environment | 316L Stainless Steel | High Corrosion-Resistant Stainless Steel Fixed Heads |
| Petroleum, chemical, explosive areas | 304/316L Stainless Steel | Explosion-Proof Stainless Steel Cable Connectors |
| Rail transit, new energy vehicles | 304/316L Stainless Steel | High Vibration-Resistant Stainless Steel Connectors |
3.2 Selection by Thread Type
| Equipment Interface | Thread Type | Applicable Industries |
| Domestic control cabinets & distribution boxes | Metric M Thread | Machinery, automation, power |
| European imported equipment | PG Thread | Machine tools, instruments, industrial control |
| American equipment & export to North America | NPT Thread | Shipbuilding, hydraulic, petroleum |
| Low-voltage electrical & waterproof boxes | G Thread | Water treatment, outdoor lighting |
3.3 Selection by Protection Grade
| Application Scenario | Protection Grade | Product Features |
| Indoor dustproof & splash-proof | IP67 | Daily protection, cost-effective |
| Outdoor rain & immersion | IP68 | Short-term immersion, long-term waterproof |
| Underwater equipment & submersible pumps | Deep Water IP68 | Stronger sealing, higher pressure resistance |
4. Product Advantages
- High-quality stainless steel material: 304/316L forged material with high strength, deformation resistance and corrosion resistance.
- High protection grade: IP67/IP68 waterproof and dustproof, adaptable to harsh outdoor environments.
- Precision machining: High-precision threads, smooth installation, no slipping or jamming.
- Strong anti-vibration & tensile performance: Stable clamping structure, not easy to loosen under equipment vibration.
- Multiple international certifications: CE, RoHS, explosion-proof certification, suitable for global export.
- Support non-standard customization: Custom sizes, lengths and structures according to customer drawings.
5. Application Industries
Rail transit and high-speed rail equipment
New energy vehicles and charging piles
Wind power and photovoltaic equipment
Shipbuilding and marine engineering
Petroleum, chemical and explosion-proof equipment
Industrial automation and machinery
Outdoor lighting and municipal engineering
Sewage treatment and environmental protection equipment
6. Conclusion
HOONSUN Connector Co., Ltd. always takes quality as the core and focuses on the R&D and production of stainless steel connectors, providing industrial users with stable, durable and high-protection connection solutions. Whether in conventional working conditions or harsh environments, HOONSUN stainless steel products can meet the needs of long-term reliable operation of equipment, making it the preferred brand for industrial connections.