Description
Monster Overview
Fix your project right the first time with A563 Grade DH Heavy Hex Nuts from Monster Bolts. These high-strength structural nuts are Made in the USA and feature a hot-dip galvanized (HDG) finish with wax to deliver improved corrosion resistance and smooth assembly. Designed for demanding applications, Grade DH nuts are commonly used in structural steel, heavy construction, agricultural machinery, bridges, and equipment assemblies where reliability and strength are mandatory.
Each nut meets strict ASTM A563 Grade DH mechanical requirements, ensuring proper performance when paired with matching structural bolts such as ASTM A325 / F3125 Grade A325 or equivalent. The HDG/Wax finish improves service life and reduces installation friction in the field—ideal for bulk buyers and jobsite refills.
Monster Features
- Strength: A563 Grade DH for high-load, structural applications.
- Finish: Hot-Dip Galvanized (HDG) + Wax for corrosion protection and smoother tightening.
- Thread: Coarse (UNC) for reliable field assembly.
- Origin: 100% Made in USA for guaranteed quality and compliance.
- Bulk Packaging: Lowest cost per piece—ideal for contractors, industrial users, and large jobsite stocking.
- Compliance: Manufactured to ASTM A563 Grade DH and dimensional standards.
Monster Specifications
| Specification | Details |
|---|---|
| Nut Type | Heavy Hex Nut |
| Grade | A563 Grade DH |
| Thread | UNC / Coarse Thread |
| Finish | HDG (Hot-Dip Galvanized) with Wax |
| Material | High-strength alloy steel (Grade DH spec) |
| Country of Origin | Made in USA |
| Standards | ASTM A563 Grade DH; ASME dimensional specs |
| System of Measurement | Inch / SAE |
More Monster Products
Matching Structural Bolts: These nuts are commonly paired with Grade A325 / F3125 structural bolts, heavy hex bolts, and USA-made washers. Explore our full USA Fasteners Collection for compatible hardware.
Order Yours Today
Upgrade your construction, industrial, and heavy-equipment projects with reliable USA-Made A563 Grade DH Heavy Hex Nuts. Select your size and quantity above and click “Add to Cart” to stock up with confidence.