L H Dottie Co HWSMS1034 Hex Washer Head Sheet Metal Screws

Product Description

The L H Dottie Co HWSMS1034 is a 100-piece pack of No. 10 x 3/4 inch hex washer head sheet metal screws. These self-tapping fasteners are designed for securing sheet metal panels, brackets, and light-gauge steel components common in HVAC ductwork, electrical enclosures, and mechanical equipment housings. The hex washer head provides a broad bearing surface that resists pull-through and allows fast installation with a standard hex driver or nut driver. The self-tapping thread form cuts its own mating thread on entry, eliminating the need for a pre-tapped hole in most light-gauge applications.

These screws are a standard fastener choice for HVAC installers securing duct sections, sheet metal fabricators assembling enclosures, and electricians fastening junction box covers and panel components. The 100-piece pack quantity suits jobsite use where a working supply of common fasteners is needed. They are appropriate for light-gauge sheet metal and similar thin-material applications across residential and commercial mechanical installations.

Key Features

• No. 10 x 3/4 inch size — a common trade-standard dimension for sheet metal fastening
• Hex washer head design for use with standard hex or nut drivers
• Self-tapping thread form cuts into light-gauge sheet metal without a pre-tapped hole
• Integrated washer head distributes clamping load and reduces pull-through risk
• 100-piece pack provides a practical jobsite quantity for duct and enclosure work

Compatibility

Designed as a standard self-tapping fastener for light-gauge sheet metal applications including HVAC ductwork, electrical enclosures, and mechanical equipment panels.

Installation Notes

Sheet metal screws of this type are installed by HVAC technicians, sheet metal mechanics, and electricians as part of routine mechanical and electrical work. Use a hex driver or nut driver sized to the fastener head. Confirm the base material gauge is appropriate for a No. 10 self-tapping screw before driving. Power down or de-energize any electrical enclosure or equipment before fastening panels or covers per applicable NEC guidelines.