S-91026A031 3/8"-16 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to black-oxide steel coating, extending service life in harsh industrial environments
• Exceptional load distribution from the extra wide profile, reducing stress concentration and preventing joint failure
• High tensile strength meeting ASTM Grade 2H requirements, ensuring reliable performance under heavy loads
• Easy installation and removal with standard external hex drive and coarse UNC threads, saving maintenance time
• Precise thread engagement with Class 2B fit, providing consistent clamping force and vibration resistance
• Compliance with industry standards including ASTM A194, guaranteeing material quality and manufacturing consistency
• Environmental responsibility through RoHS 3 compliance, meeting global regulatory requirements for industrial components

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 3/8"-16 UNC hex nuts with extra wide profile provide critical solutions for structural assemblies and heavy machinery. The black-oxide steel construction offers superior corrosion protection in manufacturing plants, construction sites, and outdoor equipment where moisture and chemicals are present. The coarse thread design ensures rapid installation in high-volume production environments while maintaining secure fastening. With ASTM Grade 2H certification, these nuts deliver consistent performance in vibration-prone applications such as conveyor systems, agricultural equipment, and structural steel connections, preventing costly downtime and maintenance interventions.

Specification Summary & Compliance

These hex nuts feature 3/8"-16 UNC coarse threads with Class 2B thread fit for precise engagement. Manufacturing complies with ASTM A194 specifications for material quality and dimensional accuracy. The components meet RoHS 3 (2015/863/EU) compliance with exemption 6(a) for lead as an alloying element in steel. Physical dimensions include 11/16" width and 23/64" height, designed for use with standard inch-system tools and compatible with corresponding ASTM Grade 2H bolts for optimal performance in industrial fastener systems.