S-90343A139 3/8"-16 x 1" ASME B18.3 18-8 Stainless Steel Thread-Locking Socket Head Screws
18-8 Stainless Steel Thread-Locking Socket 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
- Permanent vibration resistance with epoxy thread locker that maintains integrity from -60°F to 300°F
- Superior corrosion resistance through 18-8 stainless steel construction for harsh industrial environments
- Precise thread engagement with Class 3A fit UNC coarse threads ensuring reliable assembly
- High-load capacity with 70,000 psi tensile strength and Rockwell B70 hardness
- Secure installation using standard 5/16" hex drive for consistent torque application
- Full thread coverage along the 1" length for maximum grip in demanding applications
- Industry compliance meeting ASME B18.3 specifications for quality assurance
Professional Applications & Engineering Value
This 18-8 stainless steel socket head cap screw delivers exceptional performance in demanding industrial settings where vibration resistance and corrosion protection are critical. The permanent epoxy thread locker chemically bonds to mating surfaces, creating a secure fastening solution that prevents loosening under extreme conditions from -60°F to 300°F. The Class 3A UNC coarse threads provide superior engagement in soft materials and faster assembly times, while the fully threaded design ensures maximum holding power across the entire 1" length. Ideal for machinery, automotive, and heavy equipment applications, this hex drive screw combines high tensile strength with reliable locking technology to eliminate maintenance concerns and reduce downtime in critical assemblies.
Specification Summary & Compliance
Manufactured to precise ASME B18.3 specifications, this socket head cap screw features 3/8"-16 UNC coarse threads with Class 3A fit for superior dimensional accuracy. The 18-8 stainless steel construction provides excellent mechanical properties including 70,000 psi tensile strength and Rockwell B70 hardness. The permanent epoxy thread locker begins hardening in 15 minutes and reaches full strength within 24 hours, ensuring reliable performance across the specified temperature range of -60°F to 300°F.
