S-91858A833 10-32 x 1" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh environments including marine and chemical applications
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing in demanding assemblies
• Precision thread engagement with Class 2A fit and UNF fine threads ensuring secure, vibration-resistant fastening in critical applications
• Flush mounting capability featuring standard 82° countersink angle and flat head design for seamless surface integration
• Full threading along 1" length provides maximum grip and adjustment flexibility across the entire fastener
• Regulatory compliance assurance meeting ASME B18.6.3 specifications while being RoHS 3 and REACH compliant for global market acceptance
• Easy installation and removal with slotted drive design compatible with standard tools for efficient maintenance operations

Professional Applications & Engineering Value

Engineered for precision assemblies where corrosion resistance and structural integrity are paramount, these 10-32 UNF flat head screws solve critical challenges in marine hardware, chemical processing equipment, and food-grade machinery. The combination of 316 stainless steel material and passivated surface treatment creates a protective barrier against chloride-induced stress corrosion cracking, while the fine thread spacing and Class 2A thread fit maintain clamping force under vibration. The fully threaded design ensures uniform stress distribution across the entire 1" length, preventing joint loosening in dynamic load conditions. These flat head fasteners with their 82° countersink angle provide flush mounting in precision machinery where protrusions would interfere with operation.

Specification Summary & Compliance

Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance ensuring precise engagement. The UNF (Unified National Fine) thread system with 10-32 size and right-hand direction provides standardized compatibility. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety. Mechanical properties include 70,000 psi tensile strength and Rockwell B80 hardness for consistent performance. Dimensional accuracy maintained with 0.362" head diameter, 0.116" head height, and standard flat head profile for reliable countersinking.