Only available in High Speed Steel. The common use for this tap is to retap a damaged 6-.1mm nipple seat used on many Spanish made replica rifles.
Plug taps have three to five threads chamfered, to cut threads in a through hole, or to start threads in a blind hole, closed at the bottom.
Tap Drills are smaller in diameter than the screw shaft to leave enough metal to cut threads.
Tap Drill Size: for 7-1mm thread use a metric Drill-6mm
This 7-1mm tap is primarily used to recut damaged nipple seat threads on Spanish manufactured rifles; Traditions, Jukar, C.V.A. etc.