S-91781A628 3/8"-16 x 1 1/2" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws
Stainless Steel Slotted 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
- Exceptional corrosion resistance with 18-8 Stainless Steel and passivated finish, ensuring long-term reliability in harsh environments.
- High tensile strength of 80,000 psi provides secure, durable fastening for heavy-duty industrial applications.
- Rockwell B80 hardness offers excellent wear resistance and maintains thread integrity under repeated use.
- Standard 82° countersink angle allows for a flush, professional finish, reducing snagging and improving safety.
- Coarse UNC thread with Class 2A fit ensures easy installation and reliable engagement in a variety of materials.
- Full threading along the 1-1/2" length maximizes grip and adjustability in deep or variable thickness assemblies.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees consistent quality and environmental safety for global projects.
Professional Applications & Engineering Value
This 3/8"-16 UNC flat head slotted screw is engineered to address common industrial challenges such as vibration loosening and material fatigue. The 18-8 Stainless Steel construction, enhanced by a passivated finish, provides superior resistance to oxidation and chemical exposure, making it ideal for marine, food processing, and outdoor equipment applications. The coarse thread design ensures quick assembly and strong holding power in softer materials or where rapid installation is critical. With a fully threaded shank and flat head profile, it delivers consistent clamping force and a smooth surface finish, reducing the risk of corrosion traps and improving overall assembly longevity. These screws are a reliable choice for engineers seeking high-strength, corrosion-resistant fasteners that meet rigorous industry standards.
Specification Summary & Compliance
This screw features precise UNC coarse threads with Class 2A fit, ensuring consistent performance and interchangeability. It adheres to ASME B18.6.3 manufacturing specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated industries and commitment to environmental standards.
