Simpson Finish Trim Screw - #9 x 4" in Tan with T15 6-Lobe Drive from Simpson Strong-Tie delivers a clean, low-profile fastening solution designed for trim, molding, and a wide range of interior and exterior finish carpentry applications. With its compact trim head that virtually disappears once driven, this screw is built for projects where fastener visibility needs to be minimal - think baseboards, door casing, window trim, and decorative woodwork. The Quik Guard Coating provides a tan color match that blends naturally with common trim materials, and the serrated thread design combined with the patented SawTooth point means you can drive straight into wood without predrilling, saving time and effort on every run.

Key Features

• Patented SawTooth Point - eliminates the need for predrilling, so you can start fasteners quickly and reduce setup time on trim and finish carpentry work
• Trim Head (0.230" head diameter) with low-profile cylinder design - sits flush and nearly invisible once driven, giving finished surfaces a clean, professional appearance
• Serrated Thread design - bites aggressively into wood fibers for strong holding power and enhanced pull-through resistance in trim and molding applications
• T15 6-Lobe Drive Type - reduces cam-out during driving, extends bit life, and keeps fastening consistent even on high-volume finish projects
• Quik Guard Coating in Tan - provides corrosion resistance suitable for both interior and exterior use, including contact with preservative-treated wood, while blending with natural wood tones
• 4" length with 2.00" thread engagement - provides deep bite and strong anchoring even when fastening through thick trim stock or layered materials

Why This Product

• No predrilling required - the SawTooth point technology lets you drive directly into wood, cutting installation time significantly on trim, molding, and finish carpentry jobs
• Rated for both interior and exterior use including preservative-treated wood, making this a single versatile fastener choice rather than stocking separate products for different exposure conditions
• The tan Quik Guard Coating closely matches natural wood tones, so the screw head blends into finished surfaces with minimal filling or touch-up needed
• The 6-lobe T15 recess provides a secure, stable bit engagement that reduces slipping and driving errors - an important advantage when working on visible finish surfaces where marring the material is not acceptable

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #9
• Length: 4 in.
• Head Type: Trim Head
• Head Diameter: 0.230 in.
• Drive Type: T15 6-Lobe
• Thread Type: Serrated Threads
• Thread Length: 2.00 in.
• Point Type: SawTooth Point
• Coating/Finish: Quik Guard Coating
• Color: Tan
• Measurement Unit: Pack
• Country of Origin: Taiwan

Available Pack Options

• FT09400R50: 50 Pk - includes (1) T15 6-lobe driver bit
• FT09400MB: 1000 Pk - includes (2) T15 6-lobe driver bits

Frequently Asked Questions

Do I need to predrill before driving the Simpson Finish Trim Screw?

No. The patented SawTooth point is specifically engineered to eliminate the need for predrilling. It starts fast and drives cleanly into wood, making it well suited for trim and molding work where speed and a clean finish are both priorities.

Is this screw suitable for exterior use or contact with pressure-treated lumber?

Yes. The Quik Guard Coating provides corrosion resistance that makes this screw appropriate for both interior and exterior applications, including use with preservative-treated wood. The tan color also blends naturally with common exterior trim tones.

What driver bit do I need for the T15 6-Lobe drive?

A T15 6-lobe driver bit is included with #9 size packs. If you need a replacement, the compatible replacement driver bit is BIT15T-2-R2.

What is the thread engagement length on the 4" version of this screw?

The 4" Finish Trim Screw has a thread length of 2.00 inches. The serrated thread design maximizes grip and pull-through resistance within that engagement zone, making it effective for fastening through thicker trim profiles into structural backing.

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