S-91781A261 10-24 x 4" ASME B18.6.3 Stainless Steel Slotted 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 80,000 psi tensile strength and Rockwell B80 hardness to withstand high-stress applications
• Reliable thread engagement through UNC coarse threading and Class 2A fit ensuring secure fastening in various materials
• Optimal flush mounting with standard 82° countersink angle and flat head design for smooth surface finishing
• Versatile partial threading allowing unthreaded shank sections for precise clamping and alignment control
• Industry-standard compliance meeting ASME B18.6.3 specifications for consistent quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries

Professional Applications & Engineering Value

These 10-24 UNC flat head screws deliver critical performance advantages in industrial fastening applications where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel composition combined with passivated surface treatment provides exceptional protection against chemical exposure and atmospheric corrosion, making them ideal for marine equipment, food processing machinery, and outdoor structural applications. The coarse UNC threading ensures rapid installation and superior holding power in softer materials, while the partial threading design allows engineers to precisely control clamping force distribution. The standardized 82° countersink angle and slotted drive facilitate flush mounting in precision assemblies, eliminating protrusions that could interfere with mechanical operation. These industrial screws solve common engineering challenges including vibration-induced loosening, material compatibility issues, and regulatory compliance requirements.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with Class 2A thread fit tolerance and UNC coarse thread profile ensuring consistent performance across applications. The 4" length with minimum 1½" thread length provides versatile fastening capabilities. Compliance with ASME B18.6.3 mechanical standards guarantees interchangeability and reliability. Environmental certifications include full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to the latest environmental safety standards for industrial components.