S-91520A160 Length 2 1/4" Wood Screws

Key Features & Benefits at a Glance

• Superior holding power through thread forming technology that creates strong, permanent threads in wood and composite materials
• Reduced splitting risk with narrow flat head profile that sits flush without damaging material surfaces
• Enhanced corrosion resistance from black-phosphate steel coating that protects against rust in various environments
• Secure installation with square drive design that prevents cam-out and provides maximum torque transfer
• Optimized thread engagement with 18 TPI (threads per inch) design for maximum grip in wood applications
• Simplified alignment through partial threading that allows for precise positioning before final tightening
• Compatible installation requiring only a standard 1/16" drill bit for pre-drilling in various materials

Professional Applications & Engineering Value

These No. 6 wood screws are engineered to address common fastening challenges in woodworking and composite material applications. The thread forming technology eliminates the need for separate tapping operations while creating stronger thread engagement than conventional cutting threads. The black-phosphate steel construction provides essential corrosion protection for interior applications where moisture may be present. The square drive system prevents the frustrating cam-out issues common with Phillips drives, ensuring efficient installation in production environments. The narrow flat head profile allows for flush mounting without surface protrusions, making these screws ideal for furniture assembly, cabinetry, deck building, and plastic-wood composite applications where appearance and structural integrity are equally important.

Specification Summary & Compliance

These wood screws feature precision right-hand threads with a 0.138" thread diameter and 18 TPI thread pitch. The partially threaded design provides 1-1/8" of minimum thread length on the 2-1/4" overall length screw. Manufactured to industry standards with Class 2A thread tolerances for consistent performance. The black-phosphate surface treatment meets industrial corrosion resistance requirements while the steel composition complies with standard material specifications for wood fastening applications. Compatible with standard 1/16" drill bits for pre-drilling in various wood types and plastic-wood composites.