S-92245A923 1/2"-13 x 2 3/4" FF-S-85, MS35307-418 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 provided by passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
- High tensile strength of 70,000 psi delivers exceptional load-bearing capacity for demanding industrial applications.
- Rockwell B74 hardness offers excellent wear resistance and durability, reducing the risk of fastener failure.
- Class 2A thread fit ensures consistent, reliable engagement and easier assembly with standard nuts.
- External hex drive design allows for high-torque installation using common tools, speeding up assembly processes.
- Partial threading provides optimal grip and clamping force where needed, enhancing joint stability.
- Compliance with Fed. Spec. FF-S-85 (MS35307-418), RoHS 3, and REACH guarantees material safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
This 1/2"-13 UNC hex head screw is engineered to address critical challenges in heavy machinery, structural frameworks, and marine equipment where corrosion resistance and high tensile strength are paramount. The passivated 18-8 stainless steel material effectively combats oxidation and chemical exposure, extending service life in aggressive environments. Its coarse UNC thread and Class 2A fit facilitate quick, secure fastening even in vibrating conditions, reducing maintenance needs. The partial threading design concentrates clamping force efficiently, preventing joint loosening in dynamic loads. Ideal for construction, transportation, and industrial assembly, this external hex drive screw ensures reliable performance where failure is not an option.
Specification Summary & Compliance
This fastener adheres to precise dimensional standards, including a Class 2A thread fit for consistent interchangeability and a 1/2"-13 UNC coarse thread profile. It is manufactured in compliance with Fed. Spec. FF-S-85 (MS35307-418) for quality assurance. The product is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for hazardous substances.
