#4-40 Plug STI Tap, High Speed Steel
Model #: TASTI-4-40
Price: $7.00
Description: #4-40 HS Plug STI Tap
- Size: 4-40
For helical screw thread inserts, Class 3B. High speed steel, plug style. A 1/4-20 STI tap creates the proper thread (a bit larger than 1/4-20) for installing a 1/4-20 Recoil or Helicoil insert, which will accept a 1/4-20 threaded part.