M20x30mm Hex Bolt Class 8.8 Galvanized TZN Steel GB/T5780-86 Heavy Duty Fastener

Product Overview

This M20 hex bolt is a Class 8.8 high-strength galvanized fastener manufactured for demanding mining, machinery, structural, and industrial assembly applications. The bolt follows GB/T5780-86 dimensional requirements and features a 30mm nominal bolt size with a tough zinc-coated TZN finish for corrosion resistance.

Key Features

• Class 8.8 high-strength steel for reliable clamping and load performance
• Galvanized TZN surface treatment provides oxidation and corrosion resistance
• Metric M20 thread compatible with standard M20 nuts and washers
• Hexagonal head allows secure wrenching during installation and removal
• Manufactured according to GB/T5780-86 for dimensional consistency
• Suitable for mining machinery, equipment maintenance, steel structures, and general industrial fabrication

Specifications

Applications

This bolt is designed for mining machinery, conveyor structures, equipment frames, chassis assemblies, structural steel connections, maintenance repair operations, agricultural machinery, and heavy equipment manufacturing where high tensile strength and outdoor corrosion protection are required.

Package Contents

• 1 x M20x30mm Class 8.8 Galvanized Hex Bolt