DEKFAST #12 Roofing Screws

DEKFAST #12 roofing screws are low slope roofing screws with a #12 drill point. They are used for a variety of connections and attach rigid insulation to steel or wood deck. They suit most low-slope roof assemblies, insulation and membranes.

The screw is made of carbon steel with a black epoxy coating and a truss head. The thread has a major diameter of .222 in and a minor diameter of .130 in. It fastens into wood or steel up to 16ga max (.060 in | 1.52mm).

• #12: 1-5/8 in long, full thread; 1000 pieces per box, 13 lb per box
• #12: 2-1/4 in long, full thread; 1000 pieces per box, 17 lb per box
• #12: 3 in long, full thread; 1000 pieces per box, 20 lb per box
• #12: 4 in long, full thread; 1000 pieces per box, 30 lb per box
• #12: 5 in long, 4 in thread length; 1000 pieces per box, 34 lb per box
• #12: 6 in long, 4 in thread length; 1000 pieces per box, 41 lb per box
• #12: 7 in long, 4 in thread length; 500 pieces per box, 24 lb per box
• #12: 8 in long, 4 in thread length; 500 pieces per box, 48 lb per box

• Head: truss head, 0.437 in diameter, 0.112 in high
• Drive: #3 cross recess
• Material: carbon steel
• Finish: epoxy coating (black)
• Corrosion protection: meets or exceeds FM4470 corrosion standards per Kesternich DIN 50018 SFW 2.0 test of 15 cycles
• Ultimate load: tensile 3,100 lb min; shear 1,800 lb min; torsional 60 lb-in min
• Pullout in wood, average ultimate: 462 lb in 3/4 in fire rated plywood; 575 lb in 2x dimensional lumber with 1 in embedment. Minimum safety factor of four (4) for design.
• Pullout in steel, minimum value calculated per S100: 255, 306, 408 and 509 lb in 22, 20, 18 and 16 ga ASTM A653 Grade 33 (45 ksi); 311, 374, 498 and 623 lb in ASTM A563 Grade 40 (55 ksi); 368, 442, 589 and 736 lb in ASTM A653/A1008 Grade 50 (65 ksi); 464, 557, 743 and 928 lb in ASTM A653/A1008 Grade 80 (82 ksi). Minimum safety factor of three (3) for design.
• Screw gun: 2,000 RPM max with torque control
• Metal deck: the fastener penetrates the deck by a minimum of 3/4 in
• Concrete and wood: embedment of at least 1 in, or a minimum of 1 in penetration through wood decking