S-90128A722 1/2"-13 x 2 1/2" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 PSI provides superior load-bearing capacity and resistance to failure in high-stress applications
• Zinc-plated alloy steel construction offers excellent corrosion resistance and durability for extended service life in harsh industrial environments
• Class 3A thread fit ensures precise, secure fastening with minimal play for vibration-resistant connections
• Partially threaded design allows for controlled clamping force and prevents thread damage during installation
• Hex socket drive enables high-torque installation and removal with standard 3/8" drive tools
• Coarse UNC threads provide quick assembly and superior holding power in various materials
• Rockwell C37 hardness maintains thread integrity and prevents stripping under repeated use

Professional Applications & Engineering Value

These socket head cap screws deliver critical performance advantages in demanding industrial applications where reliability is paramount. The zinc-plated alloy steel construction provides essential corrosion protection while maintaining the 170,000 PSI tensile strength required for heavy machinery, structural frameworks, and equipment assembly. The 1/2"-13 UNC coarse threads with Class 3A fit ensure rapid installation and vibration resistance in automotive, manufacturing, and construction applications. The partially threaded configuration allows precise positioning and controlled clamping force, preventing joint loosening while the hex socket drive accommodates high-torque requirements without head stripping. Engineered to meet ASTM A574 specifications, these fasteners solve critical challenges in maintenance, repair, and original equipment manufacturing where failure is not an option.

Specification Summary & Compliance

This socket head cap screw features precision 1/2"-13 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy. Manufactured to ASTM A574 specifications with Rockwell C37 hardness and 170,000 PSI tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 2 1/2" length with 1 3/4" minimum thread length and right-hand thread direction ensures consistent performance across industrial applications.