S-91781A380 000-120 x 1/4" ASME B18.11, 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
• Precise thread engagement with Class 2A fit and 000-120 fine thread ensuring reliable, vibration-resistant fastening
• High-strength performance delivering 80,000 psi tensile strength for demanding industrial applications
• Optimal flush mounting with standard flat head profile and 82° countersink angle for seamless surface integration
• Industry-standard compliance meeting ASME B18.11 specifications for consistent quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices
• Full-thread design providing maximum grip length and load distribution across the entire fastener

Professional Applications & Engineering Value

These 18-8 Stainless Steel flat head screws with 000-120 fine thread and passivated finish deliver exceptional performance in precision engineering applications where corrosion resistance and reliable fastening are critical. The Class 2A thread fit ensures consistent engagement in tapped holes, reducing the risk of cross-threading in assembly operations. The flat head design with 82° countersink provides flush mounting capabilities essential for applications requiring smooth surfaces, such as machinery components, electronic enclosures, and precision instruments. The combination of 80,000 psi tensile strength and full threading offers superior clamping force distribution, making these ASME B18.11 compliant screws ideal for vibration-prone environments where fastener integrity is paramount.

Specification Summary & Compliance

This 1/4" flat head slotted screw features precision 000-120 UNS fine threads with Class 2A fit tolerance for consistent performance. Manufactured to ASME B18.11 specifications with right-hand threading and standard 82° countersink angle. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international standards for hazardous substance restrictions and chemical safety.