S-99894A453 1/2"-13 x 5" MS90725-127 Mil. Spec. Medium-Strength Steel Hex Head Screws
Mil. Spec. Medium-Strength 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 tensile strength of 120,000 PSI ensures reliable performance in demanding applications
- Corrosion-resistant cadmium plating provides enhanced durability and longevity in harsh environments
- Grade 5 steel construction with Rockwell C25 hardness offers superior mechanical properties and wear resistance
- UNC coarse threading with Class 2A fit enables faster assembly and better vibration resistance
- Partially threaded design allows for precise clamping force distribution and improved joint integrity
- External hex drive with 3/4" head width facilitates easy installation with standard tools
- Comprehensive compliance with MS90725-127 specifications and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
These Grade 5 hex head screws deliver critical engineering solutions for industrial applications where high tensile strength and corrosion resistance are paramount. The cadmium plated steel construction provides exceptional protection against environmental degradation, making them ideal for outdoor equipment, machinery assembly, and structural applications. The UNC coarse threading ensures rapid installation and superior resistance to vibration loosening, while the partially threaded design concentrates clamping force precisely where needed. With their external hex drive and substantial 5-inch length, these fasteners offer reliable performance in heavy-duty applications including construction equipment, transportation systems, and industrial machinery where consistent thread fit Class 2A tolerance ensures predictable assembly outcomes.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse threading (1/2"-13). Complies with MS90725-127 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. The Grade 5 classification ensures consistent mechanical properties including 120,000 PSI tensile strength and Rockwell C25 hardness for reliable performance across industrial applications.
