S-90093A237 Length 4" Drywall Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-phosphate coating for reliable performance in various environments
• Superior drilling efficiency with No. 2 drill tip that penetrates up to 0.105" thickness without pre-drilling
• Secure thread forming technology creates strong, permanent threads in drywall and sheet metal
• Optimized fastening control with Phillips flat head design that sits flush for clean installations
• Reduced material stress through thread forming method that displaces rather than removes material
• Versatile application capability with right-hand threading suitable for both drywall and sheet metal projects
• Partial threading design allows for precise clamping force and easier positioning during installation

Professional Applications & Engineering Value

These No. 8 x 4" black-phosphate drywall screws are engineered to address common installation challenges in construction and metalworking applications. The thread forming technology eliminates the need for pre-tapping in sheet metal up to 0.105" thickness, significantly reducing labor time and tool requirements. The specialized No. 2 drill tip with 3/16" length ensures clean penetration through drywall and thin gauge metals without causing material cracking or deformation. The black-phosphate steel construction provides essential corrosion protection for interior applications while maintaining the strength needed for structural integrity. The partially threaded design with 2" minimum thread length allows for controlled clamping force distribution, preventing over-tightening and material damage in delicate drywall installations.

Specification Summary & Compliance

These drywall screws feature precise inch system measurements with No. 8 screw size, 0.164" thread diameter, and 18 threads per inch configuration. The thread forming design follows industry standards for self-tapping fasteners, while the Phillips No. 2 drive ensures compatibility with standard power tools. The flat head profile maintains a standard configuration for flush mounting applications. Manufactured from quality steel with black-phosphate surface treatment, these screws meet industry requirements for construction fastening applications and comply with relevant material safety standards for commercial use.