S-92210A721 1/2"-13 x 2 1/4" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty fastening.
• Precise thread engagement with Class 3A thread fit and 1/2"-13 UNC coarse threading, ensuring secure connections and reduced cross-threading risk.
• Efficient installation via 5/16" hex drive and standard 82° countersink angle, allowing for flush mounting and quick assembly.
• Full threading along the 2 1/4" length provides maximum grip and adjustability in various material thicknesses.
• Compliance with ASME B18.3 standards guarantees consistent quality and interchangeability in professional applications.
• Environmental and safety adherence through RoHS 3 and REACH compliance, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

Engineered for demanding settings, these 18-8 stainless steel flat head screws address common industrial challenges like vibration loosening and corrosion. The Class 3A thread fit and UNC coarse threading enhance load distribution and ease of assembly in metals or composites, reducing installation time. With a passivated finish, they resist oxidation in moist or chemical-exposed areas, making them ideal for machinery, structural frames, and outdoor equipment. The hex drive and flat head design ensure a secure, flush fit, minimizing protrusions in automated or high-traffic environments, while the full threading adapts to variable material depths for versatile industrial fastening solutions.

Specification Summary & Compliance

This product adheres to Class 3A thread fit tolerances per UNC standards, with a thread size of 1/2"-13 and coarse spacing for optimal performance. It meets ASME B18.3 specifications for dimensional consistency and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring no restricted substances are used. The manufacturing process focuses on precision threading and material integrity to support reliable application in regulated industries.