S-92245A922 1/2"-13 x 1 3/8" FF-S-85, MS35307-412 Mil. Spec. 18-8 Stainless Steel Hex Head Screws
Mil. Spec. 18-8 Stainless 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
- Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B74 hardness for heavy-duty applications
- Easy installation and removal thanks to the external hex drive and 3/4" head width for standard wrench compatibility
- Reliable thread engagement with Class 2A coarse UNC threads ensuring secure fastening in various materials
- Full threading coverage across the 1-3/8" length provides maximum grip and load distribution
- Compliance with major industry standards including Fed. Spec. FF-S-85 (MS35307-412) for guaranteed quality
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance for global regulatory acceptance
Professional Applications & Engineering Value
This 1/2"-13 UNC hex head screw delivers critical performance advantages in demanding industrial settings. The passivated 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, significantly extending service life in exposed or chemically aggressive environments. The coarse thread design combined with Class 2A thread fit ensures rapid installation and reliable performance in soft metals, plastics, and structural applications where vibration resistance is crucial. With 70,000 psi tensile strength and full threading along its 1-3/8" length, this external hex drive fastener maintains clamping force under extreme loads, making it ideal for heavy machinery, construction equipment, and transportation applications where failure is not an option.
Specification Summary & Compliance
This hex head screw features precision 1/2"-13 UNC coarse threads with Class 2A thread fit tolerance for consistent performance. Manufacturing complies with Fed. Spec. FF-S-85 (MS35307-412) ensuring dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substances.
