S-91794A059 0-80 x 1/2" ASME B18.6.3 Stainless Steel Fillister Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Enhanced durability and strength with Rockwell B55 hardness and 70,000 psi tensile strength for reliable, long-term performance
• Precise thread engagement thanks to Class 2A thread fit and fine UNF threading, ensuring secure fastening in critical assemblies
• Optimized head design with a high, narrow fillister profile and slotted drive for efficient installation and reduced risk of cam-out
• Full thread coverage along the 1/2" length provides maximum grip and uniform stress distribution
• Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH for guaranteed quality and environmental safety
• Versatile right-hand threading compatible with standard UNF nuts and components, simplifying procurement and assembly

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 0-80 UNF fine thread screws deliver exceptional performance in precision assemblies. The 18-8 stainless steel material, combined with a passivated finish, provides outstanding resistance to oxidation and chemical exposure, making them ideal for electronics, instrumentation, and aerospace applications where corrosion can compromise integrity. The fillister head design offers a low profile with a deep slotted drive, allowing for higher torque application without stripping—critical in tightly spaced components. With a Class 2A thread fit and fully threaded shank, these screws ensure consistent clamping force and vibration resistance, reducing maintenance needs in high-strength fastening scenarios. Their compliance with ASME B18.6.3 guarantees dimensional accuracy and interchangeability, streamlining production and repair processes.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit tolerances and UNF fine thread standards (0-80 size), ensuring precise engagement. Manufactured in accordance with ASME B18.6.3 specifications, it meets rigorous dimensional and performance criteria. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated industries without hazardous substances.