National Nail Structural Screws 4 x 1/4" 50 Count Brand_Liquid Fire meets the corrugated polyethylene pipe

meets the corrugated polyethylene pipe association's test for crush resistance

Maximum working pressure: 150PSI

DO NOT add water

This stem is constructed of metal

for 1 or 2 f17t8

National Nail Structural Screws 4 x 1/4" 50 Count Brand_Liquid Fire meets the corrugated polyethylene pipe1 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