S-99894A376 3/8"-16 x 3 1/2" MS90725-72 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 load-bearing capacity with 120,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through cadmium plating, extending service life in harsh industrial environments
- Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure fastening and vibration resistance
- Enhanced durability from Rockwell C25 hardness, maintaining structural integrity under repeated stress
- Versatile partial threading design allowing for both clamping and alignment functions in assembly operations
- Industry-standard compliance meeting MS90725-72 specifications for consistent quality and interchangeability
- Easy installation and removal with external hex drive design providing positive tool engagement
Professional Applications & Engineering Value
This Grade 5 steel hex head screw delivers critical performance advantages for industrial assembly where vibration resistance and structural integrity are paramount. The 3/8"-16 UNC coarse thread configuration prevents cross-threading during high-speed assembly while maintaining secure fastening in heavy machinery, structural frameworks, and equipment manufacturing. The cadmium plated finish provides essential corrosion protection in environments exposed to moisture and industrial chemicals. With partial threading, engineers can achieve precise clamp load distribution while the external hex drive ensures reliable torque transmission during installation. These features combine to reduce assembly time, minimize maintenance requirements, and extend service life in demanding B2B applications.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with 3/8"-16 UNC coarse thread specifications. Complies with MS90725-72 military standard for dimensional accuracy and performance requirements. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. The Grade 5 classification ensures consistent mechanical properties including 120,000 psi tensile strength and Rockwell C25 hardness for industrial-grade reliability.
