S-90172A545 1/4"-20 x 3" ASTM A307 Hanger Bolts

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 50,000 psi tensile strength for reliable performance in demanding overhead and suspension applications.
• Superior corrosion resistance provided by zinc-plated steel coating, extending service life in various environmental conditions.
• Optimized thread engagement with 1/4"-20 UNC coarse threading and Class 1A fit for faster installation and secure fastening.
• Versatile eye head design featuring a 7/32" diameter eye for easy attachment of cables, wires, or hooks in rigging and hanging systems.
• Enhanced material durability from Rockwell B68 hardness steel, resisting deformation under heavy static loads.
• Regulatory compliance assurance meeting ASTM A307 specifications and environmental standards (RoHS 3, REACH) for safe industrial use.
• Efficient partial threading with 1 7/8" threaded length allowing both wood/metal engagement and unthreaded shank stability.

Professional Applications & Engineering Value

This zinc-plated steel hanger bolt delivers critical engineering solutions for industrial fastening challenges. The eye bolt design combined with 1/4"-20 UNC coarse threading enables secure overhead mounting in machinery, electrical conduit supports, and furniture assembly where both threaded anchoring and hook-point functionality are required. The partially threaded configuration prevents wood splitting while maintaining metal-to-metal thread integrity. With 50,000 psi tensile strength and corrosion-resistant zinc plating, it addresses common failure points in suspension systems—providing long-term reliability in manufacturing facilities, construction projects, and material handling equipment where static load capacity and environmental durability are paramount.

Specification Summary & Compliance

Manufactured to inch system dimensions with Class 1A thread fit tolerance for consistent performance. Threading conforms to UNC coarse thread standards (1/4"-20) with right-hand direction. Full compliance with ASTM A307 specifications for mechanical properties, alongside RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensuring restricted substance adherence for industrial and international markets.