S-92620A627 3/8"-16 x 1 3/8" 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 and Grade 8 classification for demanding industrial applications
• Superior corrosion resistance through zinc yellow-chromate plating that protects against harsh environmental conditions
• Precise thread engagement with Class 2A fit UNC coarse threads ensuring reliable fastening in high-vibration environments
• Exceptional durability from Rockwell C33 hardness steel construction that resists wear and deformation
• Easy installation and removal with standard 9/16" external hex head design compatible with common tools
• Full-thread coverage along the 1-3/8" length provides consistent clamping force across the entire fastener
• Industry compliance assurance meeting ASME B18.2.1 and SAE J429 specifications for quality and reliability

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical performance in heavy-duty industrial applications where failure is not an option. The combination of high-strength steel and zinc yellow-chromate plating addresses common challenges in construction, machinery, and automotive sectors by providing both exceptional tensile strength and corrosion protection. The 3/8"-16 UNC coarse threading with Class 2A fit ensures rapid installation and secure fastening in materials where fine threads might strip or fail. Engineered to withstand extreme vibration and shock loads, these fully threaded fasteners maintain integrity in structural connections, equipment assembly, and high-stress mechanical systems where reliability is paramount.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit with UNC coarse threading (3/8"-16) and meets ASME B18.2.1 and SAE J429 manufacturing specifications. The fastener maintains dimensional accuracy with a 1-3/8" length, 9/16" head width, and right-hand thread direction. Manufactured from high-grade steel with Rockwell C33 hardness and 150,000 psi tensile strength, it complies with industrial standards for heavy-duty applications. The zinc yellow-chromate plating provides RoHS and REACH compliant corrosion protection for extended service life in demanding environments.