S-94386A100 1/4"-20 x 3/4" IFI 111, SAE J429 Extra-Wide Serrated-Flange Hex Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction for longer service life in demanding environments
• Superior clamping force and vibration resistance through serrated flange design that prevents loosening under dynamic loads
• High-strength performance with Grade 5 classification and 110,000 psi tensile strength for heavy-duty applications
• Quick installation and removal using standard external hex drive compatible with common wrench tools
• Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening in various materials
• Full-length threading provides maximum grip and adjustment flexibility across the entire fastener length
• Regulatory compliance meets SAE J429 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 5 hex head screws deliver exceptional performance in construction, machinery assembly, and structural frameworks. The zinc-plated steel construction provides essential corrosion protection while maintaining the 110,000 psi tensile strength required for critical joints. The serrated flange eliminates the need for separate washers and creates positive locking action that resists vibration-induced loosening - a common failure point in dynamic equipment. With UNC coarse threads and Class 2A fit, these screws offer rapid installation in steel, aluminum, and other industrial materials while maintaining precise thread engagement. The external hex drive accommodates high torque application, making them ideal for automated assembly systems and maintenance operations where reliability is paramount.

Specification Summary & Compliance

This 1/4"-20 hex head screw features Class 2A thread fit per UNC standards with coarse thread spacing for optimal performance in various materials. Manufacturing complies with IFI 111 specifications meeting SAE J429 requirements for Grade 5 fasteners. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental regulatory adherence for global industrial applications. Dimensional accuracy includes 3/4" length, 5/8" flange diameter, and full threading configuration as specified.