S-99894A201 5/16"-18 x 1" MS90725-34 Mil. Spec. Medium-Strength Steel Hex Head Screws
Mil. Spec. Medium-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
- Superior load-bearing capacity with 120,000 psi tensile strength for reliable performance in high-stress applications
- Enhanced corrosion resistance through cadmium plating, extending service life in challenging environments
- Optimized thread engagement with coarse UNC threads and Class 2A fit for faster installation and secure fastening
- Exceptional durability from Grade 5 steel construction with Rockwell C25 hardness for long-term reliability
- Maximum thread coverage with full threading along the entire 1" length for superior holding power
- Industry-standard compliance meeting MS90725-34 specifications with RoHS 3 and REACH environmental regulations
- Efficient installation and removal with external hex drive design providing excellent torque transmission
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Grade 5 steel hex head screws deliver exceptional performance where reliability is critical. The cadmium plating provides superior corrosion protection in harsh environments, while the coarse UNC thread design ensures rapid installation and vibration resistance in machinery, structural assemblies, and heavy equipment. With fully threaded construction and Class 2A thread fit, these fasteners maintain consistent clamping force across the entire engagement length, preventing loosening under dynamic loads. The external hex drive allows for high-torque application, making them ideal for automotive, construction, and manufacturing applications where high tensile strength and dimensional precision are paramount for operational safety and longevity.
Specification Summary & Compliance
This 5/16"-18 UNC hex head screw features precise Class 2A thread fit tolerances and complies with MS90725-34 manufacturing specifications. The fastener meets stringent industry standards including RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) environmental regulations. Manufactured from Grade 5 steel with cadmium plating finish, the screw maintains dimensional accuracy throughout its 1" length with coarse thread spacing and right-hand thread direction for consistent performance across industrial applications.
