Delivery of ASTM A194 Grade 2H Hex Nuts with Hot-Dip Galvanizing to Singapore
Haihao Group recently completed a shipment of heavy hex nuts for a long-standing industrial partner in Singapore, manufactured according to ASME B18.2.4.6M-2010 and ASTM A194 Grade 2H specifications. These nuts, sized M56, are engineered to perform in high-pressure, high-temperature bolting environments, and were delivered with hot-dip galvanizing in full compliance with ASTM F2329.
Product Specifications
| Parameter | Specification |
|---|---|
| Nut Type | Heavy Hex Nut |
| Standard | ASME B18.2.4.6M |
| Size | M56 |
| Material Grade | ASTM A194 Gr.2H |
| Surface Coating | Hot-Dip Galvanized (ASTM F2329) |
| Application | Pressure piping systems, flange joints |
These M56 hex nuts are commonly used in conjunction with stud bolts and flanges in petrochemical, offshore, and heavy structural projects, where high clamping force and corrosion protection are critical.
ASTM A194 Gr.2H Hex Nuts with Hot Dip Galvanizing supplied by Haihao Group
Why These Standards Matter
ASME B18.2.4.6M ensures precise dimensional tolerances for metric heavy hex nuts, allowing compatibility with standard bolts used in structural and pressure-rated systems.
ASTM A194 Gr.2H is a high-strength carbon steel grade designed for use in pressure vessels, valves, and flanges under elevated temperatures.
ASTM F2329 hot-dip galvanizing offers significantly thicker and more durable zinc coatings compared to electroplating, extending the fastener’s service life in marine or humid climates-making it an ideal choice for Singapore’s coastal environment.
Quality You Can Depend On
All hex nuts were manufactured and tested at Haihao Group’s production facility under strict quality control protocols, including:
- Dimensional inspection per ASME B18.2.4.6M
- Mechanical testing to verify hardness and tensile properties
- Coating thickness checks according to ASTM F2329
- Thread calibration and full visual inspection
Each nut was coated with both faces blue, fitted with protective caps, and securely packed to ensure rust-free delivery to the end user.
ASTM A194 Grade 2H Hex Nuts Coating thickness checks according to ASTM F2329
Partnering for Performance
Haihao Group continues to supply high-performance fasteners to global clients in oil & gas, energy, and infrastructure sectors. With full control over production, heat treatment, surface finishing, and packaging, we’re able to deliver precision-engineered fastening components that meet international standards and project-specific requirements.
If you are sourcing ASTM A194 Grade 2H heavy hex nuts, galvanized structural fasteners, or complete bolting kits for ASME flanges, our team is ready to support your technical needs.
Contact Haihao Group today to request a quote or technical consultation for your next project.