National Nail Structural Screws 4 x 1/4" 50 Count Brand_Liquid Fire Maximum working pressure: 150PSI

Maximum working pressure: 150PSI

for 1 or 2 f17t8

Ideal for applications where lower flashpoint solvents can be used

Working water pressure: 15 psi (minimum) – 90 psi (maximum)

building a sound

National Nail Structural Screws 4 x 1/4" 50 Count Brand_Liquid Fire Maximum working pressure: 150PSI1 4 in. (6. 35mm) structural screw for deck substructure, deck posts, beams, handrails, landscape timbers, and more Replaces 3 8 in. (9. 53mm) lag screws Sharp point starts fast with no pre drilling Flat, washer style head provides stronger holding power and greater surface contact and finishes flush 3rd party tested for screw strength confirmation T 30 and T 40 Star Drive provides more points of contact, reducing cam outs and limiting bit wear