S-92949A259 10-32 x 3/16" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional thread precision with Class 3A UNF fine threads ensuring reliable, vibration-resistant connections in critical applications
• High tensile strength of 70,000 psi provides dependable load-bearing capacity for demanding mechanical assemblies
• Optimized hex drive design with 1/8" drive size enables secure tool engagement and reduces stripping risk during installation
• Compact rounded button head profile offers low-profile fastening with standard head dimensions for space-constrained applications
• Full threading along 3/16" length delivers maximum grip and uniform stress distribution across the entire fastener
• Rockwell B55 hardness maintains structural integrity under repeated assembly and disassembly cycles

Professional Applications & Engineering Value

These 10-32 UNF Class 3A rounded head screws deliver critical performance advantages in precision engineering applications where vibration resistance and corrosion protection are paramount. The combination of 18-8 stainless steel material and passivated surface treatment creates a robust barrier against chemical exposure and atmospheric corrosion, extending service life in manufacturing equipment, electronic enclosures, and instrumentation panels. The fine thread spacing and Class 3A thread fit provide superior clamping force retention in high-vibration environments, while the hex drive configuration ensures positive torque transmission during installation. The fully threaded design maximizes engagement in thin materials and blind holes, making these button head screws ideal for aerospace components, medical devices, and precision machinery where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 specifications with Class 3A thread tolerances for precision fit. Features UNF fine threads (10-32) with 0.19" thread diameter and 3/16" length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial supply chains. Mechanical properties include 70,000 psi tensile strength and Rockwell B55 hardness for consistent performance.