S-92245A540 1/4"-20 x 3/4" FF-S-85, MS35307-306 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, ensuring long-term reliability in harsh environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B74 hardness for heavy-duty load-bearing applications
- Easy installation and removal thanks to the external hex drive and coarse UNC threading that reduces cross-threading risks
- Precise thread engagement with Class 2A fit, providing consistent performance and vibration resistance in assembled components
- Full threading coverage along the 3/4" length for maximum grip and uniform stress distribution
- Compliance with stringent regulations including RoHS 3 and REACH, making them suitable for global industrial markets
- Standardized dimensions (1/4"-20 thread, 7/16" head width) ensuring compatibility with common tools and existing assemblies
Professional Applications & Engineering Value
Engineered for demanding environments, these hex head screws in passivated 18-8 stainless steel provide a robust solution where corrosion resistance and high tensile strength are critical. The UNC coarse threading and Class 2A fit facilitate quick assembly while maintaining secure fastening under vibration, making them ideal for machinery, structural frames, and industrial equipment. Their fully threaded design ensures uniform clamping force, reducing the risk of joint failure. Complying with Fed. Spec. FF-S-85 (MS35307-306), these screws deliver consistent performance in OEM and MRO applications, from manufacturing plants to outdoor installations.
Specification Summary & Compliance
This 1/4"-20 x 3/4" hex head screw features a Class 2A thread fit per UNC standards, ensuring precise dimensional accuracy. Manufactured from 18-8 stainless steel with passivation for enhanced surface durability, it meets Fed. Spec. FF-S-85 (identified as MS35307-306). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally conscious procurement and usage in various industrial sectors.
