8 x 1-1/4 Ph Flat SDS Zn
Overview
The 8 x 1-1/4 Ph Flat SDS Zn (50899) is designed for Hardware > Hardware Accessories > Hardware Fasteners > Screws applications, specifically as a self-drilling fastener for light gauge sheet metal and related substrates. Manufactured by Midwest Fastener Corp., this zinc-finished Phillips flat-head self-drilling screw eliminates the need for a pilot hole by incorporating a drill-shaped point that cuts through the substrate on contact.
Technical Specifications
| MPN | 50899 |
|---|---|
| Brand | Midwest Fastener Corp. |
| Size | #8 x 1-1/4" |
| Drive Type | Phillips (Ph) |
| Head Style | Flat |
| Point Type | Self-Drilling (SDS / Tek) |
| Finish | Zinc (Zn) |
| Screw Type | Self-Drilling (Tek Screw) |
Technical Features
- Drill-shaped self-drilling point: Cuts through the substrate on contact, eliminating the need for pre-drilling a pilot hole and reducing installation steps.
- Phillips drive head: Compatible with standard Phillips drivers and bits for widespread tool availability on the job site.
- Flat head profile: Sits flush with or below the surface of the workpiece upon full installation, providing a clean, low-profile finish.
- Zinc finish: Provides a base level of corrosion resistance, extending the service life of the fastener in typical interior and light exterior environments.
- #8 x 1-1/4" sizing: Appropriate gauge and length for secure engagement in light gauge sheet metal applications without over-penetration.
Applications
- Light gauge sheet metal fastening
- Awning installation and repair
- Door and window frame assembly
- Gutter attachment and fabrication
- Shed construction and panel attachment

















































