S-91268A897 7/8"-9 x 2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 150,000 psi tensile strength for critical structural applications
• Superior wear resistance achieved through Rockwell C33 hardness for extended service life
• Reliable fastening performance with Class 2A thread fit ensuring precise engagement and vibration resistance
• Quick installation efficiency through UNC coarse threading and external hex drive design
• Full-thread coverage along the 2" length provides maximum grip and distribution of clamping forces
• Heavy-duty construction meeting Grade 8 standards for the most demanding industrial environments
• Regulatory compliance assurance with RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

Engineered for heavy machinery, structural steel connections, and industrial equipment assembly, these Grade 8 hex head screws deliver critical reliability where failure is not an option. The fully threaded UNC coarse spacing enables rapid installation in thick materials while maintaining superior pull-out resistance. The external hex drive accommodates high-torque applications, and the steel construction with Rockwell C33 hardness withstands extreme vibration and shock loads common in manufacturing, construction, and automotive applications. These industrial hex screws provide the exceptional durability needed for permanent installations subject to constant stress and environmental exposure.

Specification Summary & Compliance

Manufactured to ASME B18.2.1 and SAE J429 specifications with Class 2A thread fit for consistent dimensional accuracy. The 7/8"-9 UNC coarse thread with right-hand direction follows standardized inch system requirements. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility while maintaining the 150,000 psi tensile strength and material properties required for Grade 8 classification.