S-91858A157 6-32 x 1 1/2" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Enhanced durability from passivated finish that increases surface hardness and extends service life
• Reliable mechanical performance with 70,000 psi tensile strength and Rockwell B80 hardness for heavy-duty applications
• Precision thread engagement through Class 2A fit UNC coarse threads ensuring secure fastening
• Flush mounting capability with 82° countersink angle and flat head design for smooth surface finishes
• Full threading coverage along the 1-1/2" length provides maximum grip and load distribution
• Regulatory compliance meeting ASME B18.6.3 standards and environmental regulations (RoHS 3, REACH)

Professional Applications & Engineering Value

These 316 stainless steel flat head screws deliver exceptional performance in demanding industrial settings where corrosion resistance and structural integrity are paramount. The passivated finish provides an additional protective layer against chemical attack and oxidation, making them ideal for marine equipment, chemical processing plants, and food-grade applications. With UNC coarse threading and Class 2A fit, these fully threaded screws ensure rapid installation and reliable clamping force in various materials. The 82° countersink angle allows for seamless flush mounting in precision assemblies, while the slotted drive offers compatibility with standard installation tools. These industrial fasteners maintain their mechanical properties even in extreme temperature fluctuations and corrosive atmospheres, providing long-term reliability for critical connections.

Specification Summary & Compliance

This 6-32 x 1-1/2" flat head slotted screw features UNC coarse thread with Class 2A dimensional tolerance for precise fitment. Manufacturing conforms to ASME B18.6.3 specifications ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances above threshold limits. Threading is right-hand direction with complete coverage along the shank length, while the standard flat head profile maintains industry-standard installation requirements.