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#8-18 x 1/2 in. Phillips Full Contour Truss Head Self-Tapping Screws, Black Oxide, 10,000-Pack
Our Price:$445.94These full-threaded self-tapping screws are for installers and maintenance teams fastening thinner sheet metal. Their truss heads provide a low-clearance fastening option for work where space above...
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How to Choose Truss Head Screws
Choose a truss head screw by matching the fastening materials, screw size and length, point and thread design, head clearance needs, and package quantity to the work at hand. The products represented here include options for metal lath, metal studs, metal-to-metal connections, and selected metal-to-wood applications.
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Match the screw to the fastening task
Options in this category are used for attaching metal lath to metal studs, fastening metal components together, and securing metal lath or pre-drilled metal brackets to wood. Some lath screws are specifically described for stucco or plaster work.
Compare point, size, length, and quantity
Select the compatible material connection first, then compare the listed screw number and length. Review whether a self-drilling, drill-point, self-piercing, or high-low thread design fits the installation, and choose a pack count that suits the amount of fastening work.
Plan around clearance and coverage
Modified truss head options are designed for limited clearance above the fastener head and provide a broad bearing surface. Wide or modified thin truss head lath screws offer a broad, low-profile head where wider coverage is needed.
Know the represented material ranges
Several self-drilling options are intended for metal lath to metal stud attachment. Certain lath screws support metal-to-metal fastening, while selected products also support metal-to-wood use. One lath screw option is specified for 20- to 12-gauge metal, and another for 26- to 22-gauge metal components.
The selection includes #4, #8, #10, and #12 screw sizes.
Listed screw lengths range from 3/8 inch through 2 inches.
Package counts range from a 100-count box to a 10,000-piece pack.
Specified lath screw options cover 20- to 12-gauge and 26- to 22-gauge metal.
Compare the Main Truss Head Screw Types
Use this overview to narrow the selection by installation method and the applications stated for each product type.
| Product type | Installation features | Represented applications |
|---|---|---|
| High-low thread truss head screws | Fully threaded; high-low thread; modified truss head | Plastic, nylon, wood, and other low-density materials |
| Modified truss head self-drilling screws | Self-drilling point; full thread; broad bearing surface; low-clearance head | Attaching metal lath to metal studs and other limited-clearance fastening work |
| Truss head lath screws | Self-drilling, self-tapping, self-piercing, or drill-point designs depending on the item | Metal-to-metal connections; selected metal-to-wood, stucco, plaster, lath, and bracket applications |
Plan the right fit before choosing
Identify the connection you need to make
The most important comparison is the material combination. Many represented self-drilling screws are intended for attaching metal lath to metal studs. Lath screw options expand the selection for metal-to-metal fastening, while certain products are also described for fastening metal lath or pre-drilled metal brackets to wood.
- Metal lath to metal studs: choose among the self-drilling modified truss head options.
- Metal to metal: consider self-drilling, self-tapping, or self-piercing lath screws described for these connections.
- Metal to wood: use products specifically identified for metal lath or pre-drilled metal brackets to wood.
- For stated gauge ranges, one option drills into 20- to 12-gauge metal and another supports 26- to 22-gauge metal components.
Choose a point and head style for the job
Self-drilling points are designed to cut through material and help eliminate a separate pilot-hole step. Drill-point and self-piercing designs also help streamline installation without separate pre-drilling. A high-low thread design is represented for plastic, nylon, wood, and other low-density materials, with benefits including reduced driving torque and improved resistance to thread stripping and pullout.
- Self-drilling points help avoid pilot-hole drilling in the described applications.
- Self-tapping lath screws help create threads during metal-on-metal installation.
- A modified truss head provides low clearance where space above the fastener is limited.
- Broad or extra-large bearing surfaces provide expanded contact beneath the head.
Select the dimensions and quantity that fit the work
The represented selection includes #4, #8, #10, and #12 screws in lengths from 3/8 inch to 2 inches. Available package counts range from 100 to 10,000 pieces, allowing buyers to compare smaller installation quantities with high-count packs for ongoing or larger fastening work.
- #4 x 3/8 inch high-low screws are represented for low-density materials.
- #8 options include 1/2 inch, 3/4 inch, 1 inch, 1-1/4 inch, 1-1/2 inch, and 1-5/8 inch lengths.
- #10 and #12 self-drilling options are represented in 2 inch lengths.
- Pack counts represented include 100, 120, 170, 260, 1,000, 2,000, 2,500, 3,000, 5,000, and 10,000.
Common questions before buying
What are truss head screws used for?
The represented products are used for metal lath attachment, metal-to-metal fastening, metal-to-wood fastening, and fastening into low-density materials such as plastic, nylon, and wood.
Do these truss head screws require a pilot hole?
Many represented products have self-drilling, drill-point, or self-piercing designs that help eliminate a separate pre-drilling or pilot-hole step. Match the product to its stated application.
Why choose a modified truss head?
Modified truss head screws provide low head clearance where space above the fastener is limited. Listed options also have a broad or extra-large bearing surface beneath the head.
What sizes and package counts are available?
The summaries represent #4, #8, #10, and #12 screws in lengths from 3/8 inch to 2 inches. Pack counts range from 100 to 10,000 pieces.