Product Description
The Simpson #7 3 in Self-Drilling Siding Screw in 410 Stainless Steel is a trim-head fastener built for attaching wood siding, wood panels, and metal trim to steel studs. The #3 drill point drives directly into steel framing without pre-drilling, and the compact trim head keeps finished surfaces clean and low-profile - making this screw a dependable choice for siding and panel installation work where appearance and holding strength both matter.
Key Features
- Trim head design - delivers a low-profile, finished look on exposed siding and panel surfaces where a bulky fastener head would be unacceptable
- #3 drill point - self-drills directly into steel studs without pre-drilling, saving time and reducing steps during installation
- #1 square drive - provides positive bit engagement and reduces cam-out during driving; a compatible replacement bit is available under model number BIT1S-2-R2
- Type 410 stainless steel construction - can be hardened through heat treatment, giving the screw the structural integrity needed to drill through metal while holding up in demanding framing applications
- 19 TPI thread count with 2/3 thread length - delivers strong holding power in wood siding and panel fastening applications
Why This Product
- No pre-drilling required - the #3 drill point penetrates steel stud framing on contact, reducing labor time and keeping the installation process moving on larger siding and panel jobs
- Clean, professional finish - the trim head profile sits low against the surface, making it well-suited for visible applications where fastener appearance affects the final result
- Reliable drive performance - the #1 square drive reduces cam-out and bit slippage, giving installers confident control during high-volume fastening work
- Engineered for steel framing compatibility - Type 410 stainless steel is heat-treatable to achieve the hardness needed for self-drilling into steel studs, making this screw purpose-built for wood-to-steel and metal trim-to-steel applications
Specifications
- Model No.: F07T300TDB
- Coating/Material: Type 410 Stainless Steel
- Screw Size: #7
- Length (in.): 3
- Head Diameter (in.): 0.230
- Drive Type: #1 Square
- Head Type: Trim Head
- Thread Length (in.): 2/3
- TPI: 19
- Point Type: Drill Point (#3)
- Packaging Qty.: 2000
Approved Applications
- Attaching wood siding to steel studs
- Fastening wood panels to steel framing
- Securing metal trim to steel studs
Frequently Asked Questions
- What type of drive does this screw use, and is a replacement bit available?
- This screw uses a #1 square drive. A compatible replacement bit is available under model number BIT1S-2-R2.
- Can this screw drill through metal without pre-drilling?
- Yes. The #3 drill point is designed for self-drilling into steel studs, so no pre-drilling is required before fastening.
- Does Type 410 stainless steel offer the same corrosion resistance as Type 316 or Type 305?
- No. Type 410 stainless steel can be hardened through heat treatment, giving it the ability to drill through metal, but it does not offer the same level of corrosion resistance of either Type 316 or 305 stainless steel.
- How many screws are included in this package?
- This package contains 2000 screws, making it well-suited for large siding and panel installation projects.
Note: Product dimensions and/or thread length may differ from picture. Please see item description for specifications.
Reviews
FAQs
Standard Shipping is free on orders over $50 within the contiguous US. If the order is under $50.00, the shipping is $9.99 set fee for shipping within the contiguous US.
Most of our products will ship within 1 to 3 Business Days. Some Special order products will ship within 2 to 5 Business Days. Preorders will be shipped to you on a first come first serve basis as soon as available from the manufacturer. Items that are "Made-to-Order" (Custom order products) will be shipped when fabrication is completed, shipping and delivery times will vary and depend on manufacturing.
Products that are shipped directly from the manufacturer will have processing and fulfilment times subject to manufacturer availability.
Preorders are shipped on a first come first serve basis as soon as available from the manufacturer, the sooner you place your Preorder the sooner your order will ship.
Freight shipping Policy:
Orders/Items too large or heavy may require special handling/Shipping and may require to be sent by truck. Someone must be present to accept truck deliveries. Standard truck delivery is to a dock facility designed to receive freight. You will be notified within 24 hours of ordering to confirm delivery. Lift gates for deliveries are available for an additional fee.
We offer Financing options through Clicklease
Please email your Return request to info@FactoryDirectSupplyOnline.com
Include the order number and the reason for your return.
All returns, regardless of their categorization, must include all original parts, be in their original packaging, and in the condition in which they were received. You may not qualify to receive a refund If the returned item is used, damaged, missing any parts, or is damaged during return shipping.
Checkout our complete Return policy
You can contact us through our contact page! We will be happy to assist you.