Stainless Steel 304 Hex Head Nuts DIN934 ASME B18.2.2 Corrosion Resistant

Product Specification

Stainless Steel 304 Hex Head Nuts DIN934 ASME B18.2.2 Corrosion Resistant Fasteners

1. Product Description

Hex head nuts are standard hexagonal threaded fasteners with a precision-formed internal thread. Designed for use with mating bolts, screws, or threaded studs, they provide reliable clamping force for mechanical joints. Manufactured from low-carbon steel, medium-carbon steel, alloy steel, and stainless steel, these nuts are produced in accordance with ISO 4032, DIN 934, ASTM A194, and GB/T 6170 standards. They are available in metric (coarse and fine pitch) and imperial (UNC/UNF) thread series, with a full range of surface finishes including plain, zinc-plated (clear/yellow), hot-dip galvanized, black oxide, and mechanical zinc plating.

The product line covers property classes from 4 to 12, with sizes ranging from M3 to M100 (and equivalent imperial sizes from 1/4" to 4"). All products are subject to strict quality control, including dimensional inspection, hardness testing, proof load testing, and salt spray testing, to ensure compliance with international standards and customer-specific requirements.

ction and proper torque application are essential for achieving a reliable, long-lasting connection.

2. Product Applications 

Hex head nuts are essential components in bolted connections across diverse industries:

• Construction & Infrastructure – steel structure bolting, bridge connections, tower assembly, and prefabricated building systems.

• Industrial Equipment – heavy machinery, compressors, pumps, turbines, and material handling systems.

• Automotive & Commercial Vehicles – chassis fastening, powertrain mounting, and suspension systems.

• Oil, Gas & Petrochemical – pipeline flanges, pressure vessels, and refinery equipment.

• Marine & Offshore – shipbuilding, dockside structures, and offshore platform installations.

• Electrical & Renewable Energy – wind turbine towers, solar panel mounting frames, and transmission line hardware.

3. Product Advantages

1. Global Standards Compliance
All products conform to internationally recognized standards (ISO, DIN, ASTM, BS, GB), ensuring full compatibility with bolts from any global supplier and simplifying cross-border procurement.

2. Full Size and Grade Coverage
The product range encompasses all commonly used metric and imperial sizes, from M3 through M100, with property classes 4, 6, 8, 10, and 12 available. This one-stop offering reduces supplier management complexity for buyers.

3. Flexible Surface Treatment Options
Multiple finishing options are available to meet different corrosion protection requirements and budget constraints, from basic zinc plating for indoor use to heavy-duty hot-dip galvanizing and Dacromet coating for aggressive outdoor and marine environments.

4. Strict Quality Assurance
Comprehensive in-process and final inspection procedures, including chemical composition analysis, dimensional measurement, mechanical testing, and corrosion testing, guarantee product reliability. Full traceability is maintained from raw material to finished product.

5. Competitive Pricing with Reliable Delivery
Mass production capabilities, combined with efficient supply chain management, ensure cost-effective pricing and on-time delivery for both small-batch and large-volume orders.

4. Key Specifications