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The Steel Leg Insulator Spindle Insulator Pin with Square Neck is designed for securing porcelain or polymer post insulators on utility pole line systems. Made from galvanized high-strength steel, this insulator pin provides excellent durability, structural stability, and long-term outdoor resistance. Its square neck design ensures firm mounting and prevents rotation during installation or heavy load operation. This steel insulator spindle is widely used on transmission and distribution networks requiring reliable mechanical support and corrosion-proof performance.
• Strong mechanical strength for high voltage pole applications
• Square neck design prevents movement or loosening
• Weather-resistant galvanized steel finish
• Compatible with multiple insulator types and mounting platforms
• Long service lifespan with minimal maintenance
Overhead Power Distribution Systems：Used as mounting hardware for securing insulators.
Transmission Line Structures：Supports insulators under tension or vertical load.
Industrial and Commercial Power Networks：Suitable for reinforced lines requiring stronger support.
Renewable Energy Line Systems：Works with wind and solar grid connection structures.
High-Corrosion or Outdoor Harsh Environments：Anti-rust finish ensures long-term reliability.
Each steel leg insulator spindle pin with square neck undergoes mechanical load testing, thread accuracy inspection, and corrosion resistance verification.
| Stock No. | Main Dimension mm | Mechanical | Class | Weight | ||||||
| H | D | h | h1 | H2 | a | d2 | Strength(kn) | ANSI | (kg) | |
| C1076M | 330 | 76 | 178 | 51 | 76 | 34.9 | 20 | 11 | 56-1 | 1.9 |
| C1077M | 356 | 76 | 178 | 51 | 76 | 34.9 | 20 | 9 | 56-2 | 2.2 |
| C1078M | 407 | 89 | 165 | 51 | 76 | 34.9 | 20 | 10 | 56-3 | 2.5 |
| C1079M | 432 | 89 | 45 | 51 | 76 | 34.9 | 20 | 9 | 56-4 | 3.25 |
| C1080M | 343 | 45 | 45 | 51 | 76 | 34.9 | 20 | 6 | 56-2 | 1.6 |
Q1: Is the spindle suitable for porcelain and polymer insulators?
A1: Yes, it is compatible with both types.
Q2: Can this insulator pin be installed on steel or concrete poles?
A2: Yes, mounting options support both structures.
Q3: Is it available in different thread sizes?
A3: Yes, multiple standard sizes are available.
Q4: Does the surface treatment meet corrosion resistance standards?
A4: Yes, the galvanized finish meets outdoor durability requirements.
