S-90275A199 8-32 x 1" ASME B18.6.3 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in harsh industrial environments.
• Superior tensile strength of 60,000 psi provides exceptional load-bearing capacity and prevents fastener failure under stress.
• Rockwell B70 hardness offers excellent wear resistance, maintaining thread integrity through repeated installations.
• Full threading along the 1" length ensures maximum grip and uniform clamping force across the entire fastened joint.
• Class 2A thread fit with UNC coarse spacing allows for quick, easy assembly and reduces cross-threading risks.
• 82° countersink angle and flat head design enables a flush, secure fit that minimizes protrusion in assembled components.
• Slotted drive compatibility facilitates straightforward installation with standard tools, speeding up production workflows.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 8-32 UNC flat head screws deliver reliable performance where vibration resistance and structural integrity are critical. The zinc-plated steel material combats rust and oxidation, extending service life in machinery, electrical enclosures, and automotive assemblies. The coarse thread spacing and Class 2A fit ensure rapid, precise engagement even in high-volume production lines, reducing assembly time and errors. With a fully threaded shank and flat head profile, these screws distribute stress evenly and sit flush to prevent snagging, making them ideal for applications in metal framing, panel fastening, and equipment manufacturing where a smooth surface finish is required.

Specification Summary & Compliance

This screw adheres to ASME B18.6.3 specifications for dimensional accuracy and performance. Threads are manufactured to UNC standards with Class 2A tolerance, ensuring consistent fit and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. Additional attributes include a right-hand thread direction, standard 82° countersink angle, and slotted drive style for broad compatibility with industry tools and components.