S-90124A332 1/2"-13 x 1 1/4" ASME B18.2.1, SAE J429 Steel Wire-Lockable Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide steel coating for long-lasting performance in harsh environments
• Superior mechanical strength with Grade 5 classification and 120,000 psi tensile strength for heavy-duty applications
• Reliable torque transmission through external hex drive design and 3/4" head width for secure fastening
• Quick installation with UNC coarse threading that resists cross-threading and simplifies assembly
• Precise thread engagement with Class 2A fit ensuring consistent performance across industrial applications
• Full-length threading providing maximum grip and load distribution along the entire 1 1/4" length
• Industry compliance assurance meeting ASME B18.2.1 standards and RoHS 3 environmental regulations

Professional Applications & Engineering Value

These Grade 5 black-oxide steel hex head screws deliver exceptional value in demanding industrial environments where corrosion resistance and mechanical integrity are paramount. The black-oxide surface treatment creates a protective barrier against moisture and chemical exposure, significantly extending service life in outdoor construction, machinery assembly, and structural applications. The combination of 1/2"-13 UNC coarse threading and external hex drive ensures rapid installation with superior torque capability, reducing assembly time while maintaining joint integrity. With fully threaded design and Rockwell C25 hardness, these fasteners distribute stress evenly across the entire length, preventing localized failure points in heavy-load scenarios. Engineered to meet ASME B18.2.1 specifications, they provide reliable performance in critical applications where fastener failure is not an option.

Specification Summary & Compliance

This 1/2"-13 hex head screw features precise Class 2A thread fit with UNC coarse threading, manufactured from high-strength steel with black-oxide coating. The fastener meets ASME B18.2.1 specifications where identified under SAE J429 standards, ensuring dimensional accuracy and performance reliability. Compliance with RoHS 3 (2015/863/EU) confirms environmental responsibility, while the Grade 5 classification guarantees 120,000 psi tensile strength and Rockwell C25 hardness for demanding mechanical applications.