Simpson Strong-Tie #12 x 1-3/4" Self-Drilling TB Wood-To-Steel Screw, Square Flat Head - Black Phosphate, Qty. 50 Grade 55 Threaded Rod Self-Drilling Tip: No pre-drilling required

Self-Drilling Tip: No pre-drilling required when fastening into 18–22 gauge steel

The cartridge is supplied with one static mixing nozzle that fits on the thread at the top of the cartridge

helping maintain the structural integrity of pitched roofs

and other exposed structures

Strong-Tie Quik Drive collated WSHL screws are ideal for securely fastening subfloor quickly and accurately while eliminating squeaking floors associated with nails

Simpson Strong-Tie #12 x 1-3/4" Self-Drilling TB Wood-To-Steel Screw, Square Flat Head - Black Phosphate, Qty. 50 Grade 55 Threaded Rod Self-Drilling Tip: No pre-drilling requiredThe Simpson Strong Tie TBP1245R50 Strong Drive TB Wood to Steel Screw with black phosphate coating is designed for high performance fastening of wood to steel in interior, dry environments. This structural screw features a flat head with under head nibs for clean countersinking, a #4 drill point with wings to eliminate wood splitting, and a 6 lobe recess for controlled driving torque. The black phosphate finish provides smooth driving and a clean