S-91249A399 3/8"-16 x 1 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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
- Enhanced corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for humid or chemically aggressive environments.
- Superior tensile strength of 70,000 psi ensures reliable performance under high-stress applications without failure.
- Precise thread engagement with Class 2A UNC coarse threads for faster assembly and reduced cross-threading risks.
- Optimized drive efficiency using a No. 4 Phillips pan head, providing secure torque transfer and flush seating.
- Full threading along the 1-1/2" length offers maximum grip and adjustability in various material thicknesses.
- Consistent hardness (Rockwell B70) maintains structural integrity and resists wear over repeated use.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees industry-standard quality and environmental safety.
Professional Applications & Engineering Value
This 3/8"-16 UNC fully threaded screw is engineered to address common industrial challenges such as vibration loosening and material fatigue. The Black-Oxide 18-8 Stainless Steel construction provides an added layer of protection against oxidation and chemical exposure, making it suitable for outdoor equipment, marine hardware, and machinery in corrosive settings. The coarse thread design ensures quick installation in soft metals or plastics, while the pan head with Phillips drive allows for efficient torque application without slippage. Its high tensile strength and Rockwell B70 hardness make it a dependable choice for structural assemblies, automotive components, and heavy-duty fastening where long-term reliability is critical.
Specification Summary & Compliance
This screw adheres to Class 2A thread fit tolerances for consistent engagement and meets ASME B18.6.3 manufacturing specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances. The UNC coarse thread with a diameter of 0.375" and a length of 1-1/2" provides standardized compatibility across industrial applications.
