Hillman 375311 Phillips Tapper Concrete Screw, 1/4" x 3.25", 100 Pack Summer10 The self-regulating effect of the

The self-regulating effect of the cable reduces power consumption when the pipe does not require freeze protection

Working load limit: 6600 lb

Use in any room

Resists cracking and peeling while extending the life of the roofing substrate

It has an inverted umbrella design

Hillman 375311 Phillips Tapper Concrete Screw, 1/4" x 3.25", 100 Pack Summer10 The self-regulating effect of theUse with tapper bits for best performance BLUE Perma Seal coated. Ultimate tension 4,000 PSI concrete 2,330 LB, ultimate shear 4,000 PSI concrete 2,390 LB. 1 4" x 3 1 4" Tapper concrete screw with bit Phillips flat head Blue Perma Seal coating 1 3 4" Embedment Ultimate tension 4,000 PSI concrete 2,330 LB Ultimate shear 4,000 PSI concrete 2,390 LB 100 Pack.