S-99926A133 10-32 x 1" 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
• Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening in critical applications
• High mechanical strength delivering 70,000 psi tensile strength and Rockwell B70 hardness for demanding load requirements
• Optimized flush mounting through flat head undercut design that provides clean surface finishes without protrusion
• Enhanced installation efficiency with 3/32" hex drive allowing high-torque application and reduced tool slippage
• Versatile partial threading enabling precise clamp load control across various material thicknesses
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

These 10-32 UNF flat head screws deliver exceptional engineering value in precision assemblies where flush surface requirements meet high-strength demands. The combination of 18-8 stainless steel material and passivated finish provides superior corrosion protection for industrial equipment, electronic enclosures, and marine applications. The Class 3A thread fit with fine thread spacing ensures minimal backlash and superior vibration resistance in dynamic loading conditions. The undercut flat head profile allows complete countersink seating without material protrusion, while the hex drive system enables high-torque installation in confined spaces. These characteristics make them ideal for aerospace components, precision instrumentation, and automated machinery where reliable fastening performance is critical to operational safety and maintenance intervals.

Specification Summary & Compliance

This 1" flat head screw features precision 10-32 UNF threads with Class 3A thread fit tolerance and fine thread spacing for superior engagement. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material transparency. The partially threaded design with 0.88" minimum thread length provides optimal clamping control, while the 100° countersink angle ensures proper seating in standard chamfered holes.