S-90585A233 8-32 x 1" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh environments and extended service life
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress
• Precision thread engagement with Class 3A fit and UNC coarse threading, ensuring secure fastening and vibration resistance
• Efficient installation via 3/32" hex drive and standard flat head profile, providing flush mounting and easy torque application
• Full thread coverage along the 1" length, maximizing grip and load distribution in various material thicknesses
• Regulatory compliance with ASME B18.3 standards, RoHS, and REACH, ensuring safety and environmental responsibility
• Consistent dimensional accuracy with controlled head diameter and 82° countersink angle for uniform seating

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 316 stainless steel flat head screws address critical challenges like corrosion-induced failure and assembly inefficiency. The passivated finish enhances surface durability against chemicals and moisture, while the UNC coarse threads and Class 3A fit reduce cross-threading risks and maintain clamp load in vibrating machinery. Ideal for marine equipment, chemical processing systems, and food-grade applications, the hex drive allows quick installation with standard tools, minimizing downtime. Their fully threaded design ensures uniform stress distribution, making them a reliable choice for structural assemblies requiring high tensile strength and compliance with international standards.

Specification Summary & Compliance

This screw adheres to ASME B18.3 specifications, with precise dimensions including a 1" length, 8-32 UNC thread size, and Class 3A thread fit for tight tolerances. The 82° flat head profile and hex drive ensure compatibility with standard countersinks and tools. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of hazardous substances. Manufacturing follows strict controls for hardness (Rockwell B55) and tensile strength (70,000 psi), guaranteeing performance in regulated industries.