UNC Helicoil Type Inserts - Tapped Hole Dimensions Table
NOTE:
BSW is now superseded by UNC in practice except for 1/2″ which is 12 T.P.I. (UNC is 13 T.P.I.). In almost all other smaller sizes, interchanging BSW with UNC does not cause any practical problem.
BSW is now superseded by UNC in practice except for 1/2″ which is 12 T.P.I. (UNC is 13 T.P.I.). In almost all other smaller sizes, interchanging BSW with UNC does not cause any practical problem.
Index - Click to go to required page
Metric (ISO) Tapped Hole Sizes Table
UNC Tapped Hole Sizes Table
UNF Tapped Hole Sizes Table
BSW/BSF Tapped Hole Sizes Table
BSPP/BSPF Tapped Hole Sizes Table
BA Tapped Hole Sizes Table
NPT Tapped Hole Sizes Data
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