SFS FS3-14 Flex5 Self-Drilling Screw – 1/4″ x 1″ Hex Washer Head, Grade 5 Carbon (2,500 Pack)

The SFS FS3-14 Flex5 is a premium self-drilling screw engineered for light- and medium-gauge metal connections where high clamp load, exceptional ductility, and long-term corrosion protection are required. Manufactured from alloy steel and selectively heat treated, the load-bearing portion of the fastener meets Grade 5 specifications while the drill point and lead-in threads are hardened for fast, efficient drilling performance.

The SD3 self-drilling point eliminates pre-drilling in many metal applications, helping reduce installation time while maintaining outstanding holding strength. The proprietary VistaCorr coating provides up to 1,000 hours of corrosion resistance while improving installation performance and finished appearance. Flex5 technology delivers low driving torque, reduced thread engagement torque, and increased ductility to help resist hydrogen embrittlement while maximizing clamp load.

Key Features

• Designed for light- and medium-gauge metal applications
• Selective heat-treated alloy steel construction meets Grade 5 load-bearing specifications
• Hardened SD3 drill point and lead-in threads provide fast drilling performance
• Flex5 design provides low driving torque and maximum clamp load
• Increased ductility helps reduce the risk of hydrogen embrittlement
• VistaCorr proprietary coating delivers improved appearance and up to 1,000 hours of corrosion resistance
• Hex washer head provides secure installation and dependable load distribution
• Ideal for curtain wall, rainscreen, cladding, fenestration, solar mounting, and dissimilar-metal applications involving aluminum
• Available sizes: 1/4″ x 1″, 1/4″ x 1-1/2″, and 1/4″ x 2″