S-91771A182 2-64 x 1/4" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with passivated 18-8 stainless steel construction for reliable performance in harsh industrial environments
• Superior tensile strength rated at 80,000 PSI ensures maximum load-bearing capacity and joint integrity in demanding applications
• Precision Class 2A thread fit with UNF fine threading provides secure fastening and vibration resistance in critical assemblies
• Full threading design offers complete engagement along the entire 1/4" length for optimal holding power and distribution of stress
• Standard 82° countersink angle with flat head profile enables flush mounting and clean aesthetic finishes in precision applications
• No. 1 Phillips drive ensures efficient installation with common tools while minimizing cam-out risks during torque application
• Comprehensive regulatory compliance including ASME B18.6.3, RoHS 3, and REACH for global quality assurance and environmental safety

Professional Applications & Engineering Value

These 2-64 UNF flat head Phillips screws deliver critical engineering solutions where precision, strength, and corrosion resistance are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making them ideal for industrial equipment, electronic enclosures, and precision instrumentation. The UNF fine thread configuration ensures superior vibration resistance in dynamic applications, while the 82° countersink angle facilitates perfect flush mounting in machined surfaces. With full threading along the entire 1/4" length, these fasteners distribute clamping forces evenly, preventing joint failure in high-stress assemblies. The combination of 80,000 PSI tensile strength and standardized Class 2A thread fit guarantees reliable performance in critical fastening applications where dimensional accuracy and mechanical integrity cannot be compromised.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 specifications with precision Class 2A thread fit and UNF fine threading (2-64). Features include 1/4" length with full threading, 82° countersink angle, and No. 1 Phillips drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.