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The CENTURY DRILL TOOL CO INC 95107 is a 3/8-16 national coarse (NC) plug style fractional tap designed for hand cutting applications. It produces internally threaded holes in metal and other materials using a standard tap wrench or T-handle. The tap features precision-cut threads that are accurately formed to deliver consistent, exact threading results. Heat treatment and tempering give the cutting flutes tile-hard threads, which extends service life under repeated use. This tool is suited for maintenance technicians, machinists, and trade professionals who need reliable thread repair or new thread creation in the field or shop.
This plug tap is intended for hand-tapping operations where a starting taper tap has already been used or where through-holes allow a plug chamfer entry. The 3/8-16 NC thread specification is one of the most common fractional thread sizes in general mechanical assembly, making this tap a standard addition to any thread repair kit. The package contains 2 taps per unit, providing a backup for high-use environments or shared tool kits.
Designed for hand-tapping 3/8-16 NC threads in ferrous and non-ferrous materials where plug-style entry is appropriate for the application.
A licensed machinist or experienced trade technician should select the correct tap drill size before starting to ensure proper thread engagement percentage. Always use cutting fluid or tapping oil when threading metal to reduce heat buildup and extend tap life. Back the tap out periodically to clear chips and prevent binding, especially in blind holes. Do not force the tap if resistance increases sharply, as this can result in tap breakage.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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