High Strength Carbon Steel GB39 Square Nut with Electro Galvanized Surface
GB39 Square Nut - High-Strength Fastening Solution for Industrial Applications
Product Overview
Our GB39 Square Nuts are precision-engineered fasteners designed for robust and reliable connections in heavy-duty applications. Manufactured in strict compliance with the Chinese National Standard GB39, these square nuts offer superior holding power and are engineered to mate perfectly with standard hex bolts and screws. They are ideal for situations where a wrench cannot easily access a standard hex nut, or where anti-rotation is crucial, such as in T-slot assemblies, machinery, and structural frameworks.
Key Features
- Premium Material: Made from high-grade carbon steel (Grade 4.8, 8.8 available) or alloy steel, ensuring excellent strength, durability, and load-bearing capacity.
- Corrosion Protection: Available in multiple surface treatments including Electro-Galvanized (Zinc Plated), Hot-Dip Galvanized (HDG), Black Oxide, and Plain/Unfinished, providing varying levels of rust and corrosion resistance for different environments.
- Secure Non-Slip Design: The square shape prevents rotation when tightened against a flat surface or within a channel, simplifying assembly and enhancing safety in vibrating equipment.
- Precision Machining: CNC-controlled production guarantees consistent dimensions, accurate threading, and smooth, burr-free edges for easy and safe handling.
- Wide Compatibility: Conforms to GB39 standards, ensuring interchangeability with common metric bolts and suitable for use in international projects.
- Versatile Application: The extended bearing surface distributes pressure effectively, reducing the risk of damage to connected materials.
Technical Specifications
| Measurement System | INCH, Metric |
| Standard | DIN, ANSI, GB, JIS, BSW, GOST |
| Process | Cold Forging |
| Finish | Zinc Plated |
| Load Capacity | Medium Duty |
| Usage | For Fastening Metal To Metal |
| HS Code | 7318151001 |
Product Images
High Strength Alloy Steel Hex Washer Head Self-Tapping Drill Screw
Various specifications of threaded rods packaged in plastic containers
Threaded rods in different sizes and finishes displayed together
Industrial packaging of threaded rods ready for shipment
Packaging Options
Bolts are packed in neutral packaging boxes with standard quantities arranged in small cartons. Custom packaging configurations are available upon request. Small cartons are consolidated into larger master cartons for secure transportation. Palletized units are wrapped with waterproof film and reinforced with packaging straps, with custom shipping marks available.
Packaging Images
Threaded rods in industrial packaging boxes
Bulk packaging of threaded rods in cartons
Custom packaging solutions for threaded rods
Palletized threaded rod shipment with protective wrapping
Final packaged threaded rods ready for shipment