ASTM A563 DH Heavy Hex Nuts

Engineered for robust structural connections, the ASTM A563 Heavy Hex Nut by Qi Sheng provides exceptional load distribution and fastening security for heavy-duty B2B applications. Manufactured from premium carbon and alloy steel, it is the standard choice for civil engineering, commercial buildings, and infrastructure projects.

Structural Integrity: The designated mating nut for high-strength structural bolts (such as ASTM A325 and A490).
Heavy Hex Profile: Wider across-flats dimension provides a larger bearing surface to safely distribute high clamping loads.
Versatile Grades: Available in multiple grades (Grade A, C, DH) to meet varying tensile strength requirements.
Weather Resistance: Optional Hot-Dip Galvanized (HDG) coating ensures long-lasting protection in harsh outdoor environments.
Primary Industries: Construction, Bridge Building, Solar PV Infrastructure, and Heavy Manufacturing.

Category: Nut

Description

High-Strength ASTM A563 Heavy Hex Nuts for Structural Connections

Qi Sheng manufactures premium ASTM A563 Heavy Hex Nuts, strictly tested to meet the rigorous demands of the global construction and structural engineering sectors. Forged from high-quality carbon and alloy steel, these heavy hex nuts offer superior proof load capabilities. Their broader profile ensures optimal stress distribution, significantly reducing the risk of structural failure under heavy vibration or extreme dynamic loads.

Product Specifications

Specification Parameter	Technical Details
Standard	ASTM A563 / ASME B18.2.2
Material	Carbon Steel, Alloy Steel
Common Grades	Grade A, Grade C, Grade D, Grade DH
Size Range	1/4″ to 4″ / Metric M12 – M100
Thread Type	UNC, UNF, Metric
Surface Treatment	Plain, Zinc Plated, Hot Dip Galvanized (HDG), Black Oxide, Dacromet
Unit of Measure	Piece (B2B Wholesale Available)
Packaging	Bulk cartons with pallet / Small boxes in cartons with pallet

Industrial Application Scenarios

Our ASTM A563 Heavy Hex Nuts are the critical components holding together massive steel structures worldwide. Below is a specific breakdown of primary application scenarios where A563 excels:

Industry Sector	Specific Scenario	Recommended Grade & Coating	Core Usage Considerations
Construction	High-rise steel frameworks, commercial buildings	Grade DH / Plain or HDG	Maximum shear and tensile strength, engineered to mate flawlessly with A490 structural bolts.
Bridge Building	Bridge girders, highway infrastructure	Grade C or DH / Hot Dip Galvanized	Requires exceptional resistance to wind loads, constant vibration, and long-term weather exposure.
Solar PV Industry	Solar ground mounting brackets, arrays	Grade A or C / HDG or Zinc	Cost-effective structural clamping with heavy corrosion protection for outdoor solar farms.
Manufacturing	Heavy machinery, crane assemblies	Grade C / Plain or Zinc	Reliable clamp load to prevent loosening during heavy dynamic operations and impacts.
Marine & Port	Dock infrastructure, port loading cranes	Grade DH / Hot Dip Galvanized	Demands heavy-duty structural support combined with robust saltwater splash zone protection.

How to Order / Quick Specs

To ensure you receive the exact fastening solution for your structural project, please refer to our quick order guide. As a B2B supplier, Qi Sheng is fully equipped to fulfill your bulk and project-level requirements.

Quick Specs Checklist for Inquiry:

Product: ASTM A563 Heavy Hex Nut
Grade: Specify required grade (e.g., Grade A, Grade C, Grade DH).
Size & Thread: (e.g., 3/4″-10 UNC or M20).
Surface Treatment: (e.g., Hot Dip Galvanized, Plain, Zinc Plated).
Estimated Quantity: (Bulk/Pallet quantities)
Destination: (e.g., Canada, USA, etc.)

Ready to order? Add this product to your quote list or click here to Contact Us for wholesale pricing, custom dimensional requests, and lead times. Our engineering team will respond with a comprehensive B2B quote.