S-91268A924 1"-8 x 2 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 capability with 150,000 psi tensile strength, ideal for high-stress industrial assemblies
• Superior durability and wear resistance due to Grade 8 steel construction and Rockwell C33 hardness
• Efficient installation and removal with external hex drive and 1 1/2" head width for secure tool engagement
• Reliable coarse UNC threading ensures quick assembly and strong holding power in various materials
• Precise Class 2A thread fit provides consistent engagement and reduces cross-threading risks
• Full threading along the 2 1/2" length offers versatile fastening depth and adjustability
• Compliance with major industry standards including ASME B18.2.1 and SAE J429 for guaranteed performance

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws provide exceptional reliability in machinery, structural steel connections, and equipment subjected to high vibration and dynamic loads. The fully threaded 1"-8 UNC coarse thread design ensures maximum grip and resistance to loosening, while the external hex drive allows for high torque application without stripping. Made from high-strength steel with Rockwell C33 hardness, these fasteners withstand extreme conditions without deformation, making them ideal for construction, automotive, and manufacturing sectors where high tensile strength and long-term performance are critical.

Specification Summary & Compliance

This product features Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy and interchangeability. It complies with ASME B18.2.1 and SAE J429 specifications for hex head screws, guaranteeing consistent quality and mechanical properties. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for use in regulated industries and global markets.