Download the specification from here: ASTM A563 Heavy Hex Nut Specification
ASTM A563
- Grade 8S – High-strength structural nuts for heavy-duty applications
- Grade 10S – Superior strength and durability for critical fastening requirements
- GI (Electro Galvanized) – Basic corrosion resistance
- HDG (Hot Dip Galvanized) – Provides long-term protection in harsh environments
- Black (Self-Color) – Natural uncoated finish
- PPTF (Polytetrafluoroethylene) – Enhances friction reduction and wear resistance
- Cadmium Plating – Offers excellent corrosion protection, ideal for marine and aerospace industries
- Yellow Zinc Plating – Improves rust resistance and visual appeal
The Hex Nut, also known as the Heavy Hexagonal Nut, is a widely used fastener featuring internal threads that allow it to securely screw onto the shank of a bolt. ASTM A563 Heavy Hex Nuts are specifically designed for use with mating bolts to fasten multiple components together. The friction and compression generated between the threads provide a secure and stable connection, ensuring long-term durability in high-stress applications.
Key Features
- Precision-engineered internal threading for a strong, reliable hold
- Designed to resist loosening under vibration and heavy loads
- Compliant with ASTM, AISI, BS, EN, ISO, DIN, and JIS standards
- Available in high-strength grades and protective coatings
