M30 x 150mm Class 8.8 Galvanized Hex Bolt TZN, GBT1228-91 Heavy Duty Fastener

Product Overview

This is a heavy-duty M30 x 150mm hexagon head bolt manufactured to GB/T 1228-1991 dimensional requirements. It features a Class 8.8 high-strength steel body with a TZN galvanized finish, providing dependable tensile strength and corrosion protection for structural, mining machinery, and general industrial equipment assemblies.

Manufacturer drawing reference: NXZS25-00104, position 28. The bolt is supplied as an OEM-specification replacement component suitable for demanding maintenance and fabrication applications.

Key Features

• High-Strength Class 8.8 Steel: Suitable for clamped joints requiring controlled preload and mechanical reliability.
• M30 x 150mm Size: Large-diameter hex bolt for heavy machinery and structural connections.
• Galvanized TZN Finish: Zinc-based coating improves atmospheric corrosion resistance.
• Hexagonal Head: Compatible with standard wrenches, sockets, and powered tightening tools.
• GB/T 1228-91 Reference: Produced according to recognized Chinese large hex bolt standard geometry.
• OEM Drawing Traceability: Linked to drawing NXZS25-00104 for accurate equipment replacement.

Specifications

Applications

• Mining machinery and mineral processing equipment
• Heavy structural steel connections
• Conveyor, crusher, and material handling systems
• Industrial equipment maintenance and repair
• Machine frames, brackets, chassis, and fabricated assemblies
• Outdoor or moisture-exposed equipment requiring galvanized fasteners

Package Contents

1 piece M30 x 150mm Class 8.8 TZN galvanized hex bolt. Nuts and washers are not included unless separately ordered. Verify required thread length, coating specification, and tightening torque before installation.