Product Description
The Simpson #7 2-1/4" Self-Drilling Siding Screw in Type 410 Stainless Steel is engineered for reliable fastening of wood siding, wood panels, and metal trim to steel studs. Featuring a trim head profile, a #3 drill point for clean self-drilling performance, and a #1 square drive for positive bit engagement, this screw delivers consistent installation results in light-gauge steel framing applications. Sold in a convenient 1,000-piece pack under model number F07T225TDM, this fastener is a dependable choice for siding contractors and framing professionals.
Key Features
- Trim Head: Low-profile trim head design minimizes surface disruption for a clean, finished appearance on siding and panel installations.
- #3 Drill Point: Self-drilling point eliminates the need for pre-drilling, allowing direct penetration into steel studs for faster, more efficient installation.
- #1 Square Drive: Provides positive bit engagement and reduces cam-out during installation. Compatible with replacement bit model BIT1S-2-R2.
- Type 410 Stainless Steel: Heat-treatable alloy that can be hardened to achieve the strength needed to drill through metal substrates.
- 1,000-Piece Pack: Bulk packaging designed for high-volume professional applications.
Specifications
- Model Number: F07T225TDM
- Screw Size: #7
- Length: 2-1/4 in.
- Head Diameter: 0.230 in.
- Head Type: Trim Head
- Drive Type: #1 Square
- Point Type: #3 Drill Point
- Thread Length: 2/3 of shank
- TPI: 19
- Material / Coating: Type 410 Stainless Steel
- Packaging Quantity: 1,000 pieces
- Country of Origin: Taiwan
Approved Applications
- Attaching wood siding to steel studs
- Fastening wood panels to steel framing
- Securing metal trim to steel studs
What's Included
- 1,000 x Simpson #7 2-1/4" Self-Drilling Siding Screws (Type 410 Stainless Steel)
Frequently Asked Questions
- What material are these screws made from?
- These screws are manufactured from Type 410 Stainless Steel, which can be hardened through heat treatment, giving it the ability to drill through metal substrates.
- Does Type 410 Stainless Steel offer the same corrosion resistance as Type 316 or Type 305?
- No. Type 410 Stainless Steel does not offer the same level of corrosion resistance as either Type 316 or Type 305 stainless steel. Its primary advantage is its hardenability for metal-drilling applications.
- What replacement bit is compatible with this screw's drive type?
- This screw uses a #1 Square drive. The compatible replacement bit model is BIT1S-2-R2.
- Do product dimensions or thread length always match product images?
- Product dimensions and/or thread length may differ from the picture. Always refer to the written item description and specifications for accurate measurements.
Note: Product dimensions and/or thread length may differ from picture. Please see item description for specifications.
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