Midwest Fasteners Zinc Plated Steel Hex Washer Head Type F Sheet Metal Screws

Midwest Fasteners Zinc Plated Steel Hex Washer Head Type F Sheet Metal Screws

Midwest Fasteners Zinc Plated Steel Hex Washer Head Type F Sheet Metal Screws are coarse-thread, thread-cutting fasteners engineered for fast, reliable fastening into sheet metal, light-gauge steel and similar materials. This family is available in screw sizes ranging from 1/4"-20 x 7/8" up through 5/16"-18 x 2", including 1/4"-20 x 1-1/2", 5/16"-18 x 1/2", 5/16"-18 x 7/8" and 5/16"-18 x 1-1/2" in between, giving installers a coarse-thread option sized for the job at hand. Every size in the lineup shares the same zinc plated steel construction with a silver finish for dependable corrosion resistance in everyday shop and jobsite conditions. The hex washer head provides a wide, integrated bearing surface that spreads clamping load and resists pull-through, while the external hex drive allows fast installation with a nut driver or impact driver. As a Type F thread-cutting screw, each size cuts its own mating threads into pre-drilled holes in sheet metal, aluminum and light steel without the need for a separate nut, making this family a practical choice for assembly, repair and fabrication work.

Key Features

• Screw Size Range: Available in six coarse-thread sizes — 1/4"-20 x 7/8", 1/4"-20 x 1-1/2", 5/16"-18 x 1/2", 5/16"-18 x 7/8", 5/16"-18 x 1-1/2" and 5/16"-18 x 2" — to match a range of sheet metal thicknesses and hole patterns.
• Material & Finish: Zinc plated steel construction with a silver finish delivers dependable corrosion resistance for indoor and light outdoor use.
• Head Type: Hex washer head provides a wide, integrated bearing surface that spreads clamping load and resists pull-through.
• Drive Type: External hex drive accepts a nut driver or impact driver for fast, high-torque installation.
• Thread & Point: Coarse thread, Type F thread-cutting point that taps its own mating threads into pre-drilled holes in sheet metal and light-gauge steel without a separate nut.
• Color: Silver finish matches standard zinc plated hardware for a clean, consistent appearance across every size in the family.

Technical Specifications

• Country of Origin: China

Typical Applications

• Fastening sheet metal panels, brackets and enclosures
• HVAC ductwork and light-gauge steel framing assembly
• General metal fabrication and repair work
• Attaching hardware to pre-drilled sheet metal components

Why Midwest Fasteners?

Midwest Fasteners builds this hex washer head sheet metal screw family with consistent zinc plated steel construction and precise Type F thread-cutting geometry, giving contractors, fabricators and maintenance techs a dependable, repeatable fastener for sheet metal and light-gauge steel work across the full 1/4"-20 x 7/8" to 5/16"-18 x 2" size range. Consistent sizing, finish and thread-cutting performance mean these screws perform reliably batch after batch, whether you're stocking a shop bin, running a fabrication line or completing a one-off repair.