S-91500A148 6-32 x 1/2" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction with passivated surface treatment
• Reliable fastening performance with 70,000 psi tensile strength and Rockwell B80 hardness for demanding applications
• Precision thread engagement ensured by Class 2A thread fit and UNC coarse threading for secure installations
• Streamlined installation with standard 82° countersink angle and Phillips No. 2 drive for flush mounting
• Full-threaded design provides maximum grip length and uniform stress distribution along the entire 1/2" length
• Regulatory compliance with ASME B18.6.3 manufacturing standards and environmental regulations including RoHS 3 and REACH
• Industrial-grade durability with complete material traceability and consistent performance in chemical-exposed applications

Professional Applications & Engineering Value

These 316 stainless steel flat head screws deliver exceptional value in corrosive environments where chemical resistance and structural integrity are paramount. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, making these Phillips drive screws ideal for marine equipment, chemical processing plants, and food processing machinery. The 6-32 UNC coarse threading provides excellent engagement in various materials while resisting vibration-induced loosening. With full threading along the entire 1/2" length, these fasteners distribute clamp load evenly, preventing stress concentration points. The standard 82° countersink ensures proper seating in prepared holes for flush installations where surface protrusion is unacceptable. These industrial fasteners meet the rigorous demands of OEM applications requiring reliable performance in challenging conditions.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread specifications. Complies with ASME B18.6.3 mechanical and dimensional requirements for slotted and Phillips flat head screws. Meets environmental compliance standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. Features include 82° countersink angle, 0.262" head diameter, and fully threaded 1/2" length with right-hand thread direction.