Century Drill and Tool Carbon Steel Plug Tap 1/2-20 NF Size:1/2-20 National Fine For use with cement or

For use with cement or plaster-based mixes on both exterior and interior projects

Apply multiple light coats versus one heavy coat

Course Machine Screw Thread On The Extra Large Sizes Larger Than 1/2" x 12"

Designed to help pull wire tight and hold it in place when splicing two wires together

bit diameter 11/64"

Century Drill and Tool Carbon Steel Plug Tap 1/2-20 NF Size:1/2-20 National Fine For use with cement orHeat treated and tempered for file hard threads and longer useful life Designed for hand cutting applications The plug style tap is the most commonly used style of tap with 3 to 5 threads chamfered Best drill: 29 64 Use with Cutting Oil when cutting threads in metal.