Standards and Specifications

Applicable Standards: German DIN 934-1987 (equivalent to international standard ISO 4032 and Chinese national standard GB/T 6170)
Performance Grade: Grade 4.8 (carbon steel material, guaranteed yield strength ≥310 MPa, tensile strength ≥400 MPa; suitable for general-purpose, low-strength fastening applications)
Product Grade: ≤M16 is Grade A (high precision); >M16 is Grade B (general precision)
Thread Specifications: Metric coarse-thread M3–M64 (commonly used: M3–M24)
Thread Tolerance: 6H (standard internal thread tolerance, compatible with standard external thread bolts)
Surface treatment: Natural finish, electrogalvanized (blue-white zinc / colored zinc), hot-dip galvanized, blackened (optional)

Product Features

Standardized Production

These nuts are manufactured in strict accordance with the DIN 934 standard, ensuring uniform dimensions, easy installation, and a perfect fit with international standard bolts.
Stable Structure

The hexagonal design facilitates installation using open-end wrenches, box-end wrenches, or socket tools, providing reliable locking performance.
Cost-Effective and Practical

Grade 4.8 carbon steel offers excellent strength and toughness, meeting the requirements of most general mechanical connections while providing high value for money.
Multiple Surface Treatments

We can provide various surface treatments based on your application environment, such as natural finish, galvanized, and Dacromet.
Complete Range of Sizes

Available in a wide range of sizes from M3 to M64 to meet the needs of various engineering projects and equipment installations.