Featuring patented thread technology, they require no pre-drilling and drive faster and easier than conventional lags and other structural lag screws. Features No required pre-drilling in wood be more efficient on the job by eliminating time consuming steps with self-drilling spax Patented thread serrations require up to 40% less driving torque to increase installation speed while helping prevent cracking in logs Built-on washer head designs eliminate the need and extra cost of a separate washer Fastener length stamp on the head provides convenient identification without measuring and aids on-site inspections T-star washer head offers a low-profile option for outstanding clamping force with improved aesthetics Faster & easier installation Pack of 50 Specifications Length: 4 in. Head Type: Washer Head Driver Bit Included: Yes Diameter: 0.25 in. Self Drilling: Yes Color: Gray Application: Wood Grade: 5 Grade: Indoor or Outdoor: Outdoor Finish: High Corrosion Resistant Material: Steel Thread Type: Serrated Drive Size: T-30 Thread Length: 2.375 in. Head Height: 0.097 in. Head Outer Diameter: 0.697 in. Weight: 1.95 lbs
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