Itw Buildex 560109 Hex Washer Head Sheet Metal Screw No. 9

Product Description

The ITW BUILDEX 560109 is a No. 9 hex washer head sheet metal screw designed for fastening thin-gauge metal assemblies in HVAC, ductwork, and general sheet metal fabrication. At 2.5 inches in length under head, this steel screw delivers reliable thread engagement for connecting metal panels, brackets, and duct sections. The hex drive head allows installation with standard hex drivers or nut drivers, reducing cam-out and improving torque transfer. Sold in packs of 100, this screw is a practical supply quantity for service vehicles and shop use. Licensed trades and sheet metal workers are the primary installers of this fastener type.

This fastener is suited for residential and light commercial sheet metal applications including HVAC duct assembly, equipment panel attachment, and general metal-to-metal fastening. The hex washer head provides a built-in bearing surface that distributes clamping load across thin metal without requiring a separate washer. The No. 9 thread size is a common specification for standard duct and equipment panel work, making this screw a go-to consumable for HVAC and mechanical contractors stocking field hardware.

Key Features

• No. 9 thread size for standard sheet metal fastening applications
• 2.5-inch length under head provides adequate engagement for multi-layer metal assemblies
• Hex washer head with integrated bearing surface eliminates need for a separate washer
• Hex drive reduces cam-out and improves installation speed with power tools
• Steel construction for strength in structural and mechanical fastening
• Pack of 100 supports bulk field and shop use

Compatibility

Designed as an OEM-style replacement and general-use fastener for No. 9 hex washer head sheet metal screw applications in residential and commercial HVAC ductwork and sheet metal panel assembly.

Installation Notes

Sheet metal screws of this type are installed by HVAC technicians, sheet metal workers, and mechanical contractors using a hex driver bit or nut driver. Always ensure the base material thickness is appropriate for the screw length to avoid over-penetration. Pre-drilling a pilot hole is recommended in heavier-gauge materials to prevent metal distortion. Follow applicable SMACNA standards and local mechanical codes when fastening duct assemblies.