Fractional Sizes SHCS Clear Zinc Cr3 Plating
Socket Head Cap Screws with Baked Zinc Cr3 Plating
Socket Head Cap Screws manufactured to ASME B18.3 and produced from ASTM A574 alloy steel deliver exceptional strength, precision, and reliability for demanding industrial applications. Designed with a cylindrical head and internal hex drive, these fasteners provide high torque capability in tight or recessed spaces where traditional fasteners are impractical.
High-Strength ASTM A574 Alloy Steel
ASTM A574 socket head cap screws are engineered for extreme load-bearing performance. For sizes less than 1/2 inch, these fasteners feature a minimum tensile strength of 180,000 psi, a proof load of 140,000 psi, and a Rockwell hardness of HRC 39–44. Sizes greater than 1/2 inch offer a minimum tensile strength of 170,000 psi, a proof load of 135,000 psi, and a Rockwell hardness of HRC 37–44. This strength profile makes them ideal for high-stress, vibration-prone assemblies.
Baked Zinc Cr3 Plating for Corrosion Protection
Baked Zinc Cr3 plating adds a durable, environmentally friendly layer of corrosion resistance. The trivalent chromium (Cr3) coating protects against rust and oxidation while maintaining precise thread dimensions and mechanical properties. Unlike older hexavalent chromium (Cr6) finishes, Cr3 plating offers improved environmental compliance without sacrificing performance. The baked process enhances adhesion and durability, resulting in a uniform, attractive finish suitable for harsh environments.
Socket Head Design for High Torque and Precision
The internal hex drive allows for superior torque transfer and reduced risk of stripping compared to slotted or Phillips fasteners. This design supports secure installation in confined spaces and ensures repeatable, high-clamp-force assemblies. Available in fractional sizes, these screws are fully compatible with imperial-based equipment and tooling.
Applications Across Industries
Automotive and transportation assemblies
Aerospace and defense components
Industrial machinery and tooling
Construction and structural equipment
Key Advantages of Zinc Cr3 Socket Head Cap Screws
Extremely high tensile and proof load strength
ASTM A574 alloy steel construction
Baked Zinc Cr3 plating for corrosion resistance
Environmentally responsible trivalent chromium finish
Fractional sizing for U.S. standard applications
For applications requiring maximum strength, corrosion protection, and precision fastening, Socket Head Cap Screws with Baked Zinc Cr3 Plating provide long-term performance professionals trust.