HALF LOCK NUT
HALF LOCK NUT DIN-439
📌 Overview
The Stainless Steel Half Lock Nut DIN 439 is a thin hex nut with a prevailing torque feature, designed to provide vibration-resistant fastening in assemblies where a full-height nut may not be suitable. It is commonly used in thin material applications or where space is limited, providing a secure locking mechanism without additional components like washers.
Manufactured from SS304 (A2) and SS316 (A4) stainless steel, DIN 439 half lock nuts offer excellent corrosion resistance, mechanical strength, and durability, making them suitable for machinery, automotive, marine, electrical, and industrial applications.
✅ Key Highlights
📏 Standard: DIN 439 / ISO Equivalent
🔘 Design: Thin hex nut with half-height locking feature
⚙ Material Grades: SS304 (A2), SS316 (A4)
💪 Strength Class: A2-70 / A4-70
🌊 Corrosion Resistance: Excellent – suitable for indoor, outdoor, and marine environments
🛠 Anti-Loosening Feature: Prevailing torque for vibration resistance
📦 Thread Range: M3 – M20 (Metric) / UNC & UNF (Inch)
📊 Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Half Lock Nut / Thin Prevailing Torque Nut |
| Standard | DIN 439 |
| Material | Stainless Steel SS304 / SS316 |
| Shape | Hexagonal, low-profile with locking feature |
| Thread Sizes | M3 – M20 (Metric) / UNC & UNF (Inch) |
| Strength Class | A2-70 / A4-70 |
| Surface Finish | Natural / Passivated |
| Corrosion Resistance | High – resistant to rust, chemicals, and moisture |
📍 Applications
✔ Machinery & Equipment Assemblies
✔ Automotive Components
✔ Electrical Panels & Control Boxes
✔ Marine & Offshore Equipment
✔ Thin Sheet Metal Assemblies
✔ Industrial Fixtures & Fastening Points
🏆 Why Choose Our Half Lock Nuts?
✨ Low-Profile Design – ideal for space-constrained assemblies
✨ Vibration-Resistant – prevailing torque prevents loosening under dynamic loads
✨ Durable Stainless Steel – corrosion and rust resistant
✨ Wide Size Range – metric & inch threads available
✨ Standardized Quality – manufactured according to DIN/ISO standards
✨ Reliable & Versatile – suitable for industrial, automotive, and marine applications
