S-91268A160 1/4"-20 x 1 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 PSI tensile strength, ideal for high-stress industrial assemblies and machinery.
• Superior corrosion and wear resistance due to Grade 8 steel construction and Rockwell C33 hardness, extending service life in harsh environments.
• Reliable and secure fastening with Class 2A thread fit and UNC coarse threading, ensuring consistent engagement and vibration resistance.
• Easy installation and removal using standard tools thanks to the external hex drive and 7/16" head width.
• Full-length threading provides maximum grip and adjustability across the entire 1 1/2" length for versatile applications.
• Compliance with industry standards including ASME B18.2.1 and SAE J429, guaranteeing dimensional accuracy and performance reliability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for industrial use.

Professional Applications & Engineering Value

This Grade 8 steel hex head screw is engineered to address critical challenges in heavy-duty industrial applications, such as construction equipment, automotive assemblies, and machinery frames. The 1/4"-20 UNC coarse thread and Class 2A thread fit deliver superior resistance to loosening under vibration, while the external hex drive allows for high-torque installation with common tools. Made from high-strength steel with a Rockwell C33 hardness, it withstands extreme mechanical stresses and environmental exposure, reducing maintenance needs and downtime. Fully threaded along its 1 1/2" length, it ensures uniform load distribution and secure fastening in thick materials, making it a reliable choice for engineers prioritizing durability and compliance with ASME B18.2.1 and SAE J429 standards.

Specification Summary & Compliance

This fastener adheres to precise inch system dimensions, including a 1/4"-20 UNC coarse thread with Class 2A thread fit for consistent tolerance. It meets ASME B18.2.1 and SAE J429 specifications for material and mechanical properties, ensuring reliability in industrial use. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it supports environmentally safe procurement and application.