S-91309A669 7/16"-14 x 1" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in harsh industrial environments
• High tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
• Precise Class 2A thread fit for smooth assembly and secure fastening in UNC coarse thread applications
• External hex drive design allows for easy installation with standard tools and high torque application
• Full threading along 1" length provides maximum grip and adjustment flexibility in assemblies
• Rockwell B69 hardness rating maintains thread integrity and prevents stripping during repeated use
• Compliance with major regulations including RoHS 3 and REACH for safe, environmentally responsible sourcing

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this 7/16"-14 UNC hex head screw combines steel construction with zinc plating to address common challenges like corrosion-induced failure and assembly inefficiency. The coarse thread design prevents cross-threading in high-vibration environments while the external hex drive enables rapid installation in confined spaces. With fully threaded coverage and 60,000 psi tensile strength, it provides consistent clamping force in structural frameworks, machinery assembly, and heavy equipment where Class 2A thread fit ensures dimensional accuracy across production runs.

Specification Summary & Compliance

Manufactured to ASME B18.2.1 specifications with Class 2A thread fit tolerances and UNC coarse thread profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting ASTM A307 material standards. Thread specifications include 7/16"-14 UNC size with right-hand direction and 1" fully threaded length.