Century Drill and Tool Carbon Steel Plug Tap 1/2-20 NF Size:1/2-20 National Fine 656 foot (200 meter) spool

656 foot (200 meter) spool of polywire

bit diameter 11/64"

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

Apply multiple light coats versus one heavy coat

The retrofit style creates a new stop by “piggybacking” onto existing defective 3/8” OD compression angle stops

Century Drill and Tool Carbon Steel Plug Tap 1/2-20 NF Size:1/2-20 National Fine 656 foot (200 meter) spoolHeat 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.