Value Collection BDKP76664 Hex Washer Head Sheet Metal Screw M4.2

Product Description

The VALUE COLLECTION BDKP76664 is a hex washer head sheet metal screw designed for fastening sheet metal, light-gauge steel, and similar materials in trade and industrial applications. It features an M4.2 metric thread size and measures 20 millimeters in length. The hex drive style allows installation with a standard hex bit or nut driver, providing reliable torque transfer and reducing cam-out during installation. The phosphate finish offers moderate corrosion resistance and serves as a base for paint or other coatings. This fastener is sold in a pack of 25 units, making it practical for service calls and small assembly jobs.

This screw is used in HVAC, electrical, and general sheet metal fabrication work where a hex washer head is required for load distribution across thin material. Typical applications include securing duct panels, equipment enclosures, electrical junction boxes, and sheet metal housings. The metric M4.2 thread is compatible with self-tapping applications in light-gauge ferrous sheet stock. Installers working on sheet metal ductwork, unit enclosures, or equipment cabinets will find this fastener appropriate for standard field and shop assembly tasks.

Key Features

• M4.2 metric thread size for self-tapping into light-gauge sheet metal
• 20 millimeter length suits standard sheet metal fastening depths
• Hex washer head distributes clamping load and resists pull-through
• Hex drive compatible with standard hex bits and nut drivers
• Phosphate finish provides moderate corrosion resistance and paint adhesion
• Pack of 25 units per package for efficient restocking and field use

Compatibility

Designed as a general-purpose self-tapping sheet metal screw suitable for light-gauge ferrous sheet metal applications across HVAC, electrical, and general fabrication trades.

Installation Notes

Installation is performed with a hex bit driver or nut driver sized to the fastener head. Ensure the workpiece is properly supported and secured before driving screws. Do not overtighten, as self-tapping screws in light-gauge sheet metal can strip the tapped hole if torque is excessive. Follow applicable codes and manufacturer guidelines for fastener spacing and edge distance in structural or pressure-bearing assemblies.