Simpson #10 x 1" Self-Drilling X Metal Screw with 16 TPI and Zinc Coating is a purpose-built fastener from Simpson designed for reliable metal-to-metal connections in structural and light-gauge steel applications. The hex washer head, drill point, and machine thread profile make this screw a go-to choice for steel deck fastening, side-lap stitching, and cold-formed steel framing - delivering secure, consistent results without pre-drilling. The clear zinc coating adds a layer of corrosion resistance that extends the service life of the fastener in typical construction environments. Whether you are fastening steel decking to structural steel or stitching sheet metal panels together, this self-drilling screw is engineered to drive clean and seat flush every time.

Key Features

• Self-drilling drill point - eliminates the need for a pilot hole, saving time and labor on metal framing and decking applications
• 16 TPI machine thread - fine thread pitch designed for metal-to-metal engagement, providing strong clamping force and thread retention in steel
• #10 x 1" size - compact fastener length ideal for thin steel connections such as side-lap stitching and light-gauge cold-formed steel framing
• Hex washer head with 5/16" hex drive - distributes clamping load across a wider bearing surface and allows driving with a standard hex bit or nut driver, reducing cam-out and improving installation speed
• Clear zinc coating - provides corrosion resistance for interior and protected structural steel environments, helping the screw maintain performance over time
• Point Size 3 drill tip - optimized for penetrating the steel gauges typically encountered in structural decking and cold-formed framing, enabling fast, reliable starts

Why This Product

• Engineered specifically for steel decking, side-lap stitching, and cold-formed steel framing - this screw handles the exact applications where a reliable metal-to-metal fastener is required, removing guesswork from the selection process
• The combination of a self-drilling tip and 16 TPI machine thread means the screw drills, taps, and fastens in a single operation - reducing installation steps and keeping jobs moving efficiently
• The 5/16" hex washer head is compatible with standard hex drivers and replacement bits, making it easy to integrate into existing tool setups without specialized equipment
• Simpson's zinc coating on this screw helps resist the oxidation that can weaken fastener integrity over time in enclosed or semi-protected structural steel assemblies

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length: 1 in.
• Head Diameter: 0.415 in.
• Drive Type: 5/16 in. Hex
• Head Type: Hex Washer Head
• Thread Type: Machine Threads
• TPI: 16
• Point Type: Drill Point
• Point Size: 3
• Coating: Zinc
• Country of Origin: Taiwan

Available Pack Options

• X1B1016R100: 100 Pk
• X1B1016-4K: 4000 Pk

Approved Applications

• Fastening steel decking to structural steel
• Steel stitching - side-lap connections between adjacent steel deck panels
• Cold-formed steel framing connections

Frequently Asked Questions

What type of drive tool is needed for this screw?

This screw uses a 5/16 in. hex drive, compatible with standard hex nut drivers, impact drivers with hex bit sockets, or dedicated hex driver bits. Simpson recommends replacement driver bit BITHEXR516-R1 for this screw.

Is this screw suitable for fastening steel decking to structural steel?

Yes. The self-drilling drill point, 16 TPI machine thread, and Point Size 3 tip are specifically suited for fastening steel decking to structural steel, as well as side-lap stitching and cold-formed steel framing applications.

Does this screw require a pilot hole before driving?

No. The drill point tip allows the screw to penetrate steel and create its own hole as it is driven, eliminating the need for pre-drilling and speeding up installation significantly.

What does the zinc coating provide on this screw?

The clear zinc coating on this screw provides a layer of corrosion resistance, helping to protect the fastener from oxidation in typical interior and protected structural steel environments and extending the overall service life of the connection.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.