ASTM A563 Nuts

ASTM A563 is the standard specification outlining the requirements for a broad range of carbon and alloy steel nuts. In contrast to standardized specifications for specialized nuts for high-temperature service purposes (e.g. ASTM A194), A563 is the standard specification to refer to when nuts will be used in general structural, industrial, and commercial construction. 

The specification is unique because it encompasses numerous grades, each with similar dimensions, but containing varied materials, mechanical properties, and uses. This allows engineers and fabricators to select the correct nut with the appropriate strength level to match a specific bolt. These nuts are most commonly produced in a hex or heavy hex pattern. The A563 heavy hex nut features a larger width and greater thickness, providing a larger bearing surface and increased strength, making it the standard for structural steel connections.

• Grade A: The most common grade for general, low-stress applications. Made from carbon steel, it’s the standard nut for use with low-strength bolts like ASTM A307. Available in hex and heavy hex patterns.
• Grade C & C3: These are weathering steel nuts. They are designed to form a protective rust-like patina when exposed to the elements, which prevents further corrosion. They are specified for use with weathering steel bolts like ASTM A325 Type 3.
• Grade D: A medium-strength grade intended for use with high-strength bolts. It has largely been superseded by the more reliable Grade DH.
• Grade DH & DH3: The most common high-strength grade. These nuts are made from medium carbon steel that has been Quenched and Tempered to achieve high hardness and proof load strength. Grade DH is the standard nut for use with high-strength structural bolts like ASTM A325 and A490. Grade DH3 is the weathering steel equivalent.

“Contact Jade Special Metals today with your requirement for ASTM A563 Nuts. We assure you of the best quote.

Structural Steel Construction: Building frames, bridges, and stadiums.
Industrial & OEM Manufacturing: Machinery assembly, equipment skids, and industrial framing.
Highway & Utility Structures: Sign structures, light poles, and transmission towers.
Anchor Bolt Assemblies: Anchoring structural columns and equipment to concrete foundations.

• Expert Manufacturer: As a specialized manufacturer of ASTM A563 Nuts, we have total control of the quality, including the critical heat treatment of Grade DH nuts.
• Certified Quality: Our Material Test Certificate (MTC) provides you with the assurance of full compliance with chemical and mechanical properties on every shipment.
• Extensive Inventory: We carry deep stock on the most common grades and sizes, especially a563 heavy hex nut products, for fast and reliable delivery.
• Competitive Price: Due to our efficient production processes, and direct-to-market model, we can offer a very competitive price without compromising on quality.
• Global Exporter: With our logistics capabilities, we can export nuts and other fasteners around the world and have an efficient supply chain to be sure of timely deliveries.