Chamfer TypeSemi-BottomingClass of Fit2BCutting DirectionRight HandFinish/CoatingSteam Oxide Over NitrideMaterialHSS-EMaterial ApplicationCast Iron and Hard MaterialsMeasurement SystemImperialNumber of Flutes4Overall Length2-1/2 inSeriesHTHMShank Diameter0.255 inStyleHTHMSurface ConditionSteam Oxide over NitrideThread1/4-28Thread FormUNFThread Length5/8 inThread LimitH3Thread Pitch28Thread StandardGround/UNFTool Size1/4-28 UNFTypeHigh Performance
| Chamfer Type | Semi-Bottoming |
| Class of Fit | 2B |
| Cutting Direction | Right Hand |
| Finish/Coating | Steam Oxide Over Nitride |
| Material | HSS-E |
| Material Application | Cast Iron and Hard Materials |
| Measurement System | Imperial |
| Number of Flutes | 4 |
| Overall Length | 2-1/2 in |
| Series | HTHM |
| Shank Diameter | 0.255 in |
| Style | HTHM |
| Surface Condition | Steam Oxide over Nitride |
| Thread | 1/4-28 |
| Thread Form | UNF |
| Thread Length | 5/8 in |
| Thread Limit | H3 |
| Thread Pitch | 28 |
| Thread Standard | Ground/UNF |
| Tool Size | 1/4-28 UNF |
| Type | High Performance |