S-91268A923 1"-8 x 1 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with 150,000 psi tensile strength for critical structural applications
• Superior wear resistance from Rockwell C33 hardness, extending service life in demanding environments
• Optimized thread engagement through 1"-8 UNC coarse threading for faster installation and vibration resistance
• Precise mechanical compatibility with Class 2A thread fit ensuring consistent mating with standard nuts
• Enhanced torque transmission via external hex drive design for secure fastening in high-stress applications
• Full-length threading providing uniform stress distribution along the entire 1½" length
• Regulatory compliance assurance meeting ASME B18.2.1 and SAE J429 specifications for quality consistency

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver exceptional engineering value in heavy machinery, structural steel connections, and industrial equipment assembly. The steel construction with 150,000 psi tensile strength addresses critical failure points in high-vibration environments, while the 1"-8 UNC coarse thread design prevents loosening under dynamic loads. The external hex drive accommodates high torque applications common in maintenance and construction, and the fully threaded configuration ensures maximum grip length for improved shear resistance. These industrial fasteners are engineered to withstand extreme mechanical stresses in mining, transportation, and heavy equipment applications where reliability is non-negotiable.

Specification Summary & Compliance

Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications with Class 2A thread fit precision. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features 1"-8 UNC coarse threads in right-hand direction with 1½" length in inch system measurements.