S-92865A018 1/4"-28 x 2 1/2" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws
Medium-Strength Grade 5 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance provided by zinc plating, extending service life in harsh environments
- Precision thread engagement with Class 2A fit and UNF fine threads ensuring secure fastening and vibration resistance
- High-strength Grade 5 steel construction with Rockwell C25 hardness for excellent durability and wear resistance
- Optimal torque transmission through external hex drive design for easy installation and removal
- Full threading along the 2½" length for maximum grip and uniform stress distribution
- Industry compliance assurance meeting ASME B18.2.1 and RoHS 3 standards for quality and environmental safety
Professional Applications & Engineering Value
This Grade 5 steel hex head screw delivers critical engineering solutions for industrial applications where high tensile strength and corrosion resistance are paramount. The zinc plated finish protects against environmental degradation in construction, machinery assembly, and heavy equipment applications. The UNF fine thread configuration with Class 2A fit provides superior vibration resistance and precise clamping force distribution, making it ideal for dynamic load conditions. With fully threaded design and external hex drive, installation efficiency is maximized while maintaining 120,000 psi tensile strength for structural integrity in demanding industrial fastening scenarios.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNF fine thread specifications (1/4"-28). Complies with ASME B18.2.1 and SAE J429 standards for hex head screws, ensuring interchangeability and reliability. Meets RoHS 3 (2015/863/EU) compliance for environmental safety. Features Rockwell C25 hardness and maintains consistent 120,000 psi tensile strength throughout the 2½" fully threaded length with right-hand thread direction.
