S-92210A444 3/8"-24 x 3 1/2" ASME B18.3 Stainless Steel Hex Drive Flat Head 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
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness to withstand high-stress applications
• Precision thread engagement through Class 3A thread fit and UNF fine threading for secure, vibration-resistant fastening
• Optimal flush mounting with standard 82° countersink angle and flat head design for seamless surface integration
• Enhanced installation efficiency featuring hex drive (7/32") for positive torque application and reduced tool slippage
• Full-threaded reliability across the entire 3-1/2" length for maximum grip and load distribution
• Regulatory compliance assurance meeting ASME B18.3 standards while being RoHS 3 and REACH compliant

Professional Applications & Engineering Value

These 3/8"-24 UNF flat head screws deliver critical performance advantages in demanding industrial settings where corrosion resistance and structural integrity are paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional protection against chemical exposure and atmospheric corrosion, making them ideal for marine equipment, food processing machinery, and outdoor structural applications. The Class 3A thread fit with UNF fine threading ensures precise engagement in tapped holes, reducing the risk of thread stripping while maintaining clamping force under vibration. The 82° countersink angle and flat head profile allow for flush mounting in precision assemblies where surface clearance is limited. With 70,000 psi tensile strength, these fully threaded screws provide reliable fastening in heavy-duty applications including machinery frames, equipment mounting, and structural supports where load distribution is critical.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with Class 3A thread fit precision and UNF (Unified National Fine) thread form with 24 threads per inch. Complies with ASME B18.3 specifications for dimensional accuracy and mechanical properties. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance for restricted substance management. Features right-hand thread direction and standard flat head profile with 82° countersink angle for industry-standard installation requirements.