S-91266A632 3/8"-16 x 2" ASTM F835 Alloy Steel Thread-Locking Hex Drive Flat Head Screws
Alloy Steel Thread-Locking Hex Drive Flat 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
- Vibration-resistant locking with permanent nylon patch thread locker that maintains secure fastening in temperatures from -65° to 250°F
- Exceptional durability from black-oxide alloy steel construction providing corrosion resistance and extended service life
- High-load capacity with 130,000 psi tensile strength and Rockwell C39 hardness for demanding industrial applications
- Precise thread engagement with Class 3A thread fit ensuring reliable, tight connections in coarse UNC threading
- Easy installation and flush finish with hex drive (7/32") and standard 82° countersink angle for seamless surface mounting
- Full-threaded design offering maximum grip length and uniform stress distribution along the entire 2" shaft
- Regulatory compliance meeting ASTM F835, RoHS 3, and REACH standards for quality assurance and environmental safety
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these black-oxide alloy steel flat head screws address critical challenges in machinery assembly, structural frameworks, and equipment manufacturing. The permanent nylon patch thread locker prevents loosening under extreme vibration and thermal cycling (-65° to 250°F), eliminating the need for secondary locking mechanisms. With Class 3A thread fit and coarse UNC threading, these screws provide rapid installation and superior resistance to cross-threading in high-volume production environments. The combination of 130,000 psi tensile strength and fully threaded design ensures reliable performance in dynamic load conditions, making them ideal for automotive, construction, and industrial equipment where vibration resistance and long-term fastener integrity are paramount.
Specification Summary & Compliance
This 3/8"-16 UNC flat head hex screw features precise Class 3A thread fit with coarse thread spacing and right-hand threading. Manufacturing complies with ASTM F835 specifications for mechanical properties and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant (including SVHC requirements as of 01/17/2023), ensuring environmental safety and regulatory adherence for global industrial applications.
