S-91781A054 0-80 x 3/16" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Precise thread engagement with Class 2A UNF fine threads ensuring reliable fastening in precision assemblies
• Exceptional mechanical strength delivering 80,000 psi tensile strength and Rockwell B80 hardness for demanding applications
• Optimal flush mounting with standard 82° countersink angle and flat head design for smooth surface finishes
• Full thread coverage along the 3/16" length provides maximum grip and load distribution
• Industry-standard compliance with ASME B18.6.3 specifications for guaranteed dimensional accuracy
• Environmental responsibility through RoHS 3 and REACH compliance meeting modern regulatory requirements

Professional Applications & Engineering Value

These 0-80 UNF flat head slotted screws deliver critical performance in precision engineering applications where space constraints and corrosion resistance are paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional protection against oxidation and chemical exposure, making them ideal for electronic enclosures, medical devices, and instrumentation panels. The fine thread configuration ensures superior holding power in thin materials and delicate components, while the fully threaded design maximizes engagement in shallow mounting scenarios. The standard 82° countersink angle and flat head profile enable seamless flush installation, eliminating protrusions in sensitive assemblies. These screws address common industrial challenges including vibration resistance, material compatibility, and long-term reliability in controlled environments.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerance for precise engagement. Features UNF (Unified National Fine) thread form with right-hand orientation and 0-80 thread size. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. All dimensions conform to inch system measurements with specified head diameter (0.112"), head height (0.035"), and length (3/16").