- System of Measurement: Imperial
- Thread Size: 0.2045in, 1/4-20
- Chamfer: Plug
- Number of Flutes: 3
- Thread Limit: H5
- Class of Fit: 2B
- Surface Treatment: Hardslick Coated
- Material: Super HSS
- Thread Length: 0.591in
- Shank Diameter: 0.255in
- Thread Standard: UNC
- Overall Length: 2-1/2in
- Hand Direction: Right Hand
- Type: Blue Ring High Performance
- Series: O1 Series
- Through Coolant (Yes/No): Yes
- Item Features
- Standards
- Use in a wide range of tapping equipment with synchronous or non-synchronous tapping cycles
- Super HSS for prevention of oversized threads
- Heat treated and heat-resistant steels, <850 N/sq-mm Rm, <=1200 N/sq-mm Rm
ANSI Specified|USCTI 302A