S-91783A081 2-56 x 1/2" ASME B18.6.3 Stainless Steel Round Head Slotted 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
• Reliable mechanical performance with 100,000 psi tensile strength and Rockwell B100 hardness for demanding applications
• Precision thread engagement with Class 2A fit and UNC coarse threads ensuring secure fastening and vibration resistance
• Easy installation and removal with standard slotted drive design compatible with common hand tools
• Full threading coverage along the 1/2" length provides maximum grip and load distribution
• Industry-standard compliance with ASME B18.6.3 specifications for consistent quality and interchangeability
• Environmental regulatory adherence meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

These 2-56 UNC rounded head slotted screws deliver exceptional engineering value in precision assembly applications where corrosion resistance and mechanical reliability are critical. The 18-8 stainless steel composition combined with passivated finish provides superior protection against oxidation and chemical exposure, making them ideal for electronic enclosures, instrumentation, medical devices, and marine components. The Class 2A thread fit with coarse UNC threading ensures rapid assembly while maintaining vibration resistance in dynamic environments. The rounded head profile distributes clamping force evenly, preventing surface damage to sensitive materials. These fully threaded fasteners are engineered to maintain integrity under sustained loads up to 100,000 psi tensile strength, offering dependable performance in critical industrial applications where fastener failure is not an option.

Specification Summary & Compliance

This 1/2" length screw features precise Class 2A thread fit with 2-56 UNC coarse threads and right-hand threading direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance standards. The fastener meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) standards for chemical safety, ensuring suitability for regulated industrial and commercial applications worldwide.