S-90393A124 3/8"-16 x 1 1/2" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced durability with Grade 5 classification, providing reliable performance under high-stress conditions.
• Superior locking capability due to serrations and flange design, reducing loosening from vibrations.
• High tensile strength of 120,000 psi ensures secure fastening in demanding industrial applications.
• Easy installation and removal with external hex drive, allowing for efficient tool engagement.
• Precise thread fit with Class 2A for smooth assembly and consistent engagement in coarse UNC threads.
• Full threading along the 1 1/2" length offers versatile grip in various material thicknesses.
• Compliance with environmental and safety standards including RoHS 3 and REACH, ensuring safe usage.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address common industrial challenges such as vibration-induced loosening and high-load requirements. The flange design distributes clamping force evenly, reducing surface damage, while serrations provide enhanced locking without additional components. Made with a Rockwell C22 hardness and UNC coarse threads, it ensures quick assembly and disassembly in machinery, construction, and automotive sectors. Its fully threaded 3/8"-16 configuration and external hex drive make it ideal for applications where reliability and ease of maintenance are critical, minimizing downtime and improving operational efficiency.

Specification Summary & Compliance

This fastener adheres to Class 2A thread fit for precise dimensional accuracy and smooth engagement in UNC coarse threads. It meets SAE J429 specifications for Grade 5 strength and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory alignment in industrial use.