S-90129A122 3/8"-16 x 1" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-coated steel for extended service life in harsh industrial environments
• High tensile strength of 120,000 psi ensures reliable performance under heavy loads and vibration
• Grade 5 classification guarantees consistent mechanical properties for critical assembly applications
• Flanged hex head design provides wider bearing surface and eliminates need for separate washers
• UNC coarse threading with Class 2A fit enables faster installation and superior resistance to loosening
• Full threading along 1" length allows maximum adjustment flexibility and secure fastening depth
• Rockwell C22 hardness maintains thread integrity and prevents stripping during repeated use

Professional Applications & Engineering Value

This Grade 5 hex head screw delivers exceptional engineering value through its black corrosion-resistant coated steel construction and UNC coarse thread configuration. The combination of 120,000 psi tensile strength and Rockwell C22 hardness addresses common industrial challenges including joint failure, vibration-induced loosening, and environmental degradation. The flanged design distributes clamping force evenly, preventing surface damage while the external hex drive ensures secure tool engagement for high-torque applications. Ideal for heavy machinery, structural assemblies, and equipment manufacturing where SAE J429 compliance and corrosion protection are critical performance requirements.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse thread spacing (3/8"-16). Fully compliant with SAE J429 specifications (IFI 111) for Grade 5 fasteners. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features 1" length, 13/16" flange diameter, and right-hand threading for standard industrial applications.