S-99894A105 1/4"-20 x 1" MS90725-8 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 Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
- Enhanced durability from Rockwell C25 hardness, maintaining structural integrity under repeated stress
- Efficient installation with external hex drive design allowing high torque application and quick assembly
- Versatile partial threading providing both gripping strength and clearance where needed
- Standardized compliance meeting MS90725-8 specifications for consistent quality and interchangeability
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 5 hex head screw delivers critical reliability where fastener failure is not an option. The cadmium plated steel construction provides essential corrosion protection in manufacturing plants, machinery assembly, and structural frameworks exposed to environmental stressors. The 1/4"-20 UNC coarse thread design ensures rapid installation while maintaining Class 2A thread fit precision, preventing cross-threading and reducing assembly time. With partial threading optimizing both clamping force and clearance, these industrial fasteners solve vibration-induced loosening problems in equipment subject to constant motion or impact loads, making them ideal for automotive, construction, and heavy machinery applications requiring high-strength fastening solutions.
Specification Summary & Compliance
This fastener maintains Class 2A thread fit tolerances per UNC standards with 1/4"-20 coarse thread specification. Manufacturing complies with MS90725-8 requirements, ensuring dimensional accuracy and performance consistency. The cadmium plating provides corrosion protection while meeting industrial fastener standards for heavy-duty applications.
