The Simpson Auto-Set Driver Bit T20 6-Lobe 2 in. is purpose-built for the Deck-Drive DCU screw plug Hidden Deck-Fastening System, driving DCU Composite screws to the precise depth required for a clean, flush screw plug installation. Designed by Simpson for both impact drivers and drills, this bit gives composite deck and trim installers consistent, controlled fastening performance on every drive - keeping finished surfaces free of visible fasteners and protecting the appearance of the completed project.

Key Features

• Perfect for hand-driving Deck-Drive DCU Composite fasteners when using DCU screw plugs - ensures each screw is set to exactly the right depth so screw plugs seat flush and fasteners stay hidden in the finished surface
• Compatible with both impact drivers and drills - gives installers flexibility to use the tool already in hand, whether on a jobsite or in a residential setting
• Non-abrasive depth stop - minimizes marring of the board surface and controls drive depth consistently, protecting composite and PVC deck boards from cosmetic damage during installation
• T20 6-lobe driver bit design - reduces cam-outs during driving for a more secure bit-to-screw engagement, resulting in smoother fastening and less wear on both the bit and screw head
• Steel construction at 2 in. length - provides the reach and durability needed for repeated use in composite decking, PVC trim, fascia, and millwork applications

Why This Product

• Engineered as part of a complete hidden fastening solution - the Auto-Set Driver bit works as a matched component within the Deck-Drive DCU screw plug system, so DCU Composite screws are consistently driven to the depth that allows DCU screw plugs to cover them fully and sit flush with the board surface
• Protects your composite or PVC surfaces during installation - the non-abrasive depth stop means the bit stops short of damaging the board face, a critical advantage when working with finished composite decking or PVC trim that cannot be sanded or refinished
• Reduces cam-outs for more reliable driving - the T20 6-lobe geometry keeps the bit securely seated in the screw head, reducing slippage that can strip screws or leave marks on deck boards
• Broad tool compatibility keeps the workflow moving - working with impact drivers and drills alike, this bit fits naturally into a variety of hand-drive applications across deck boards, trim, fascia, and millwork projects without requiring a dedicated tool

Specifications

• MPN: BIT20T-PL-RC1
• Drive Type: T20 6-Lobe
• Length: 2 in.
• Material: Steel

Approved Applications

• Finishing, Millwork and Trim

Frequently Asked Questions

What screws is the BIT20T-PL-RC1 Auto-Set Driver Bit designed to drive?

The Auto-Set Driver Bit is specifically designed for driving Deck-Drive DCU Composite screws to the proper depth for installing DCU screw plugs as part of the Deck-Drive DCU screw plug Hidden Deck-Fastening System.

Is this driver bit compatible with power tools?

Yes. The Auto-Set Driver Bit is compatible with both impact drivers and drills, making it versatile for hand-drive applications on decking and trim projects.

How does the depth stop feature protect my deck boards?

The bit includes a non-abrasive depth stop that minimizes marring of the board surface while consistently controlling the drive depth, ensuring the DCU screw is set at precisely the right level for a flush screw plug installation.

What is the benefit of the T20 6-lobe drive type on this bit?

The T20 6-lobe driver bit design reduces cam-outs during driving, providing a more secure engagement between the bit and the screw head for smoother, more controlled fastening performance.