S-90171A597 Length 3 1/2" ASME B18.2.1, ASTM B633 Hanger Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc yellow-chromate plating, ideal for humid or demanding environments
• Enhanced load-bearing capability with a 1/4" eye diameter for secure lifting and hanging applications
• Optimized wood penetration through a pointed tip design for easier installation and reduced splitting
• Reliable partial threading (1 3/4" length) ensures firm grip in wood while allowing smooth unthreaded shaft placement
• Consistent fastening performance with 9 threads per inch right-hand thread for predictable torque and assembly
• Robust structural integrity from steel construction, supporting heavy-duty industrial and woodworking uses
• Standardized compatibility with 5/16" screw diameter, fitting common fixtures and hardware

Professional Applications & Engineering Value

This 5/16" hanger bolt is engineered to address critical fastening challenges in wood applications, where vibration resistance and long-term stability are paramount. The zinc yellow-chromate plated steel construction provides a durable barrier against rust and environmental wear, extending service life in furniture, structural frames, and machinery mounts. Its partially threaded design allows the unthreaded portion to act as a dowel, minimizing wood stress and preventing pull-out, while the right-hand threading with 9 TPI ensures quick, secure engagement. The integrated eye bolt feature facilitates easy attachment for cables or hooks, making it versatile for both permanent installations and adjustable setups in industrial and commercial settings.

Specification Summary & Compliance

This hanger bolt adheres to ASME B18.2.1 specifications, ensuring dimensional accuracy and performance reliability. It features a 5/16" screw diameter, 3 1/2" length, and 1/4" eye diameter, with partial threading over 1 3/4" and a right-hand thread direction at approximately 9 threads per inch. The zinc yellow-chromate plating on steel complies with ASTM B633 for surface finish, supporting RoHS and REACH environmental standards. This design guarantees consistent fit and function in wood fastening, aligning with industrial quality and safety requirements.