S-95362A114 1/4"-20 x 1 1/4" ASME B18.2.1, SAE J429, ASTM A354BD, MS90728-10 Mil. Spec. High-Strength Steel Hex Head Screws
Mil. Spec. High-Strength Steel Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional load-bearing capability with 150,000 psi tensile strength, ideal for high-stress structural connections
- Superior corrosion resistance through zinc yellow-chromate plating, extending service life in harsh environments
- Reliable thread engagement with UNC coarse spacing and Class 2A fit, ensuring vibration-resistant assemblies
- Optimized drive efficiency using standard external hex drive and 7/16" head width for common tool compatibility
- Controlled thread application through partial threading, preventing over-tightening in critical joint sections
- Guarded material integrity with Rockwell C33 hardness, maintaining dimensional stability under heavy loads
- Regulatory compliance assurance meeting ASME, SAE, and ASTM specifications for quality-controlled installations
Professional Applications & Engineering Value
These Grade 8 hex head screws deliver critical performance in heavy machinery, structural steel frameworks, and industrial equipment where high tensile strength and vibration resistance are paramount. The zinc yellow-chromate plated steel construction provides superior corrosion protection in manufacturing facilities, outdoor installations, and chemical processing environments. With UNC coarse threads and partial threading design, these fasteners prevent cross-threading during assembly while concentrating clamping force where most needed. The external hex drive configuration ensures compatibility with standard industrial tools, reducing installation time and minimizing fastener damage during high-torque applications.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with 1/4"-20 UNC coarse thread specifications. Fully compliant with ASME B18.2.1, SAE J429, and ASTM A354BD manufacturing standards. Meets REACH (EC 1907/2006) regulatory requirements and carries equivalent military specification MS90728-10 recognition for quality assurance in demanding applications.
