Slotted Truss Head (Mushroom Head)

Description

Slotted truss head screws are a versatile and functional fastener used in a wide variety of industrial, commercial, and residential applications. Characterized by a broad, slightly domed head with a slotted drive, these screws offer several advantages over standard screw types, especially when it comes to holding down large surface areas without damaging the material.

Screws with machine threads for use with a nut or in a tapped hole. Machine screws that are slotted have the traditional slot that runs horizontally through the middle of the head and is intended for use with a flat blade screwdriver bit. A wide headed, lower profile screw with a traditional slot drive. Used for bolting softer materials. This unusual fastener is always manufactured with a full thread.

Design and Structure of Slotted Truss Head

Slotted truss head screws feature two distinct elements:

• Slotted Drive: The head has a single straight-line slot, designed to be driven by a flat-blade screwdriver. This is one of the oldest and most commonly used drive types. While not ideal for power tools, it remains favored for manual applications and projects requiring a simple tool setup.

• Truss Head: The defining feature of this screw is its wide, low-profile dome-shaped head. The truss head is broader and slightly flatter than a round head, which helps distribute load over a larger surface area. This makes the screw ideal for securing thin or soft materials, such as sheet metal, plastic, or fiberglass, without pulling through.

Applications of Slotted Truss Head

Thanks to their wide head and moderate holding strength, slotted truss head screws are used in a wide range of industries and products:

• Sheet Metal Fabrication: Commonly used to attach thin sheets of metal where a washer-like head is advantageous.

• Electrical Installations: Frequently used in enclosures, junction boxes, and electrical panels due to their secure grip and wide contact area.

• HVAC Systems: Ideal for fastening lightweight duct components and panels.

• Wood and Plastics: Used to fasten soft or thin materials without the need for washers.

• Furniture Assembly: Often used in knock-down or flat-pack furniture where a wide head distributes load and improves aesthetics.

• Automotive and Appliance Manufacturing: Applied in interior panels, brackets, and trim where a flush but strong connection is needed.

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