ASTM A194 Grade 4 Fasteners are heavy duty products that provide increased strength, longevity, and performance capabilities under high temperature and high-pressure conditions. ASTM A194 Grade 4 Fasteners are used across many industrial sectors, such as power generation, petrochemicals, and heavy engineering. At Dalloyed, you obtain best-in-class ASTM A194 Grade 4 Fasteners that meet the highest standards.