S-99894A660 3/4"-10 x 4" MS90725-195 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 heavy-duty applications without failure
- Superior corrosion resistance from cadmium plating extends service life in harsh industrial environments
- Precision Class 2A thread fit guarantees smooth assembly and secure fastening in coarse thread applications
- Grade 5 strength certification provides verified mechanical properties for critical structural connections
- Rockwell C25 hardness rating maintains thread integrity and prevents stripping under high torque loads
- Partially threaded design allows for optimal clamp force distribution and vibration resistance
- External hex drive configuration enables high-torque installation with standard wrenching tools
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Grade 5 hex head screws combine cadmium-plated steel construction with UNC coarse threading to solve critical fastening challenges. The 3/4"-10 thread size and 4" length make them ideal for heavy machinery assembly, structural steel connections, and construction projects where vibration resistance and long-term reliability are paramount. The partially threaded design concentrates clamping force precisely where needed, while the external hex drive accommodates high installation torque without compromising head integrity. This combination of features addresses common industrial pain points including joint relaxation, corrosion-induced failure, and installation efficiency in time-sensitive operations.
Specification Summary & Compliance
These hex head screws feature Class 2A thread fit per UNC standards with 3/4"-10 coarse threading and right-hand thread direction. Manufacturing complies with MS90725-195 specification requirements, ensuring dimensional accuracy and mechanical properties meet industrial standards. The cadmium plating provides corrosion protection while maintaining compliance with industrial fastener regulations for heavy-duty applications.
