S-99926A166 1/2"-13 x 2" 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 thread fit ensuring reliable fastening and vibration resistance
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Optimal flush mounting with undercut flat head design and 100° countersink angle for seamless surface integration
• Secure installation through 5/16" hex drive providing positive torque transmission and reduced cam-out risk
• Versatile thread configuration featuring 1/2"-13 UNC coarse threads and partial threading for flexible application across various materials
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial deployment

Professional Applications & Engineering Value

These 1/2"-13 UNC flat head screws deliver exceptional engineering value in applications where surface flushness and corrosion resistance are critical. The 18-8 stainless steel material combined with passivated finish provides superior protection against chemical exposure and atmospheric corrosion, making them ideal for marine equipment, food processing machinery, and outdoor structural applications. The undercut flat head design with 100° countersink angle ensures complete seating without protrusion, while the Class 3A thread fit maintains precise tolerances for vibration-resistant connections in heavy machinery and transportation equipment. The coarse thread configuration offers excellent holding power in softer materials and faster installation in production environments.

Specification Summary & Compliance

This flat head cap screw features precision Class 3A thread fit with 1/2"-13 UNC coarse thread specification, ensuring tight manufacturing tolerances for reliable performance. The product maintains dimensional accuracy with 0.5" thread diameter, 2" overall length, and minimum thread length of 1.74". Manufacturing compliance includes adherence to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and safety standards for industrial applications worldwide.