S-99136A109 Length 4 1/2" Drywall Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc yellow-chromate-plated steel coating, ideal for humid environments and long-term durability
• Enhanced holding power through thread forming technology that creates strong, permanent threads in drywall and wood
• Reduced material splitting with partial threading design that minimizes stress concentration
• Secure, slip-resistant fastening with Phillips No. 2 drive that prevents cam-out during installation
• Flush, professional finish thanks to standard flat head profile that sits neatly below surface level
• Optimized for heavy-duty applications with 4-1/2" length and No. 10 diameter providing substantial penetration depth
• Quick, efficient installation with pointed tip and right-hand threading for straightforward driving

Professional Applications & Engineering Value

These heavy-duty drywall screws are engineered specifically for demanding construction and renovation projects where reliability is paramount. The zinc yellow-chromate-plated steel construction provides exceptional protection against oxidation and moisture damage, making them suitable for both interior and exterior applications. The thread forming technology eliminates the need for pre-drilling in most materials, significantly reducing installation time while creating stronger, more secure connections. The partial threading design prevents over-tightening and material damage, particularly important when working with delicate drywall panels. The combination of Phillips flat head and precise dimensions ensures consistent, flush installations that require minimal finishing work, saving contractors both time and materials on job sites.

Specification Summary & Compliance

Manufactured to precise inch system specifications with No. 10 thread diameter and 9 threads per inch for consistent performance. Features standard right-hand threading and thread forming technology compliant with industry fastening standards. The 4-1/2" length with 2-1/2" minimum thread length provides optimal engagement depth. Meets relevant construction fastener specifications and contains RoHS-compliant materials for environmental safety.