Metric Threads
Metric threads are standardized screw threads based on the International System of Units (SI) and are widely used across Europe and Asia for hydraulic fittings and connectors. These threads offer precise tolerance, strong sealing capability, and compatibility with ISO standards, making them ideal for high-pressure systems and global machinery.
| Thread | D (mm) | d (mm) | NW D/N 7631 | DIN Light Duty | DIN Heavy Duty |
|---|---|---|---|---|---|
| M12 x 1 | 12.0 | 11.0 | 4 | 6 | 6 |
| M12 x 1.5 | 12.0 | 10.5 | 4 | 6 | 6 |
| M14 x 1.5 | 14.0 | 12.5 | 6 | 8 | 6 |
| M16 x 1.5 | 16.0 | 14.5 | 8 | 10 | 8 |
| M18 x 1.5 | 18.0 | 16.5 | 10 | 12 | 10 |
| M20 x 1.5 | 20.0 | 18.5 | 12 | 12 | 12 |
| M22 x 1.5 | 22.0 | 20.5 | 13 | 15 | 14 |
| M24 x 1.5 | 24.0 | 22.5 | 15 | 16 | 16 |
| M26 x 1.5 | 26.0 | 24.5 | 16 | 18 | |
| M27 x 1.5 | 27.0 | 25.5 | |||
| M30 x 2 | 30.0 | 27.9 | 20 | 22 | 20 |
| M33 x 1.5 | 33.0 | 31.5 | 25 | ||
| M36 x 2 | 36.0 | 33.9 | 28 | 25 | |
| M38 x 1.5 | 38.0 | 36.5 | |||
| M39 x 1.5 | 39.0 | 37.5 | |||
| M42 x 2 | 42.0 | 40.5 | |||
| M45 x 1.5 | 45.0 | 42.9 | 35 | ||
| M48 x 1.5 | 48.0 | 46.5 | |||
| M52 x 1.5 | 52.0 | 50.5 | |||
| M52 x 2 | 52.0 | 49.9 | 40 | 42 | 38 |
Specifications
- • Metric male threads (inverted flare 24°) for standpipe fittings
- • Diameters range from 12 mm to 52 mm
- • Thread pitch: 1.0 to 2.0 mm
- • Compatible with DIN 7631 standards for NW sizing
- • Available in light and heavy-duty DIN configurations
Features
- • Suitable for high-pressure hydraulic systems
- • Wide compatibility with international fittings
- • Robust sealing without requiring adhesives
- • Standardized for repeatable assembly and durability
Applications
- • Hydraulic Machinery: Used in cylinders, pumps, and valves
- • Industrial Equipment: Integrated into OEM systems for fluid power
- • Automotive & Trucking: Brake, clutch, and fuel lines
- • Construction Equipment: Loaders, excavators, and cranes
- • Global Export Machinery: Ensures ISO compliance for export models