S-95373A150 1/4"-20 x 2" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with hot-dipped galvanized finish for long-lasting performance in harsh environments
• High tensile strength of 60,000 psi ensures reliable load-bearing capacity for demanding applications
• Rockwell B69 hardness provides superior durability and resistance to deformation under stress
• Coarse UNC threading enables faster installation and better grip in various materials
• Class 2A thread fit guarantees precise, consistent engagement while maintaining easy assembly
• Partial threading design offers optimal clamping force distribution and vibration resistance
• External hex drive allows for high-torque installation with standard tools

Professional Applications & Engineering Value

These hot-dipped galvanized steel hex head screws deliver exceptional performance in industrial settings where corrosion resistance and structural integrity are paramount. The 1/4"-20 UNC coarse thread configuration provides superior holding power in wood, metal, and composite materials, while the partial threading design prevents joint loosening under vibration. Engineered to ASME B18.2.1 specifications, these fasteners offer reliable performance in construction, machinery assembly, electrical enclosures, and outdoor infrastructure applications. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures these screws maintain their structural integrity under sustained loads and harsh environmental conditions.

Specification Summary & Compliance

Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (1/4"-20) and 2" length with 3/4" minimum thread length. Compliant with ASME B18.2.1 specifications under ASTM A307 grade. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use.