• Flat head with nibs help countersink the screw for a flush finish
• Heavy-duty shank provides strength and durability
• Head stamp includes length in mm for inspection
• Shank knurl aids in torque reduction
• Deep T40, 6-lobe recess for a secure drive (replacement bit: BIT40T-134-R2)
• Type-17 point for fast starts
• Yellow-zinc coating
• Size: 0.315 x 9-1/2 inches
• Quantity: 250 per package

The Simpson Strong-Tie Strong-Drive SDCP Timber-CP screw is a structural fastener available in a broad range of lengths and designed for cross-laminated timber (CLT) and mass-timber construction, as well as general interior applications. These partially threaded structural fasteners are designed to pull structural members together with superb holding power and excellent load capacity. The large, flat head and underhead nibs provide for clean countersinking, flush with the surface. Predrilling is not typically required. For interior and dry-service applications.

• Flat head with nibs help countersink the screw for a flush finish
• Heavy-duty shank provides strength and durability
• Head stamp includes length in mm for inspection
• Shank knurl aids in torque reduction
• Deep T40, 6-lobe recess for a secure drive (replacement bit: BIT40T-134-R2)
• Type-17 point for fast starts
• Yellow-zinc coating
• Size: 0.315 x 9-1/2 inches
• Quantity: 250 per package