The 667-00640 is a 6-40 U.S. high-speed steel (H.S.) hand tap set with T, P, and B tap designations. It is intended for producing internal 6-40 threads using the three-tap hand-tapping sequence.
This type of hand tap set is typically used for manually starting, forming, and finishing internal threads in general maintenance, repair, and fabrication work where a 6-40 U.S. thread is required.
- Product model: 667-00640
- Thread size: 6-40
- Thread standard: U.S.
- Material designation: H.S. (high-speed steel)
- Set designations: T, P, B
- Product type: Hand taps set
