Basic StandardANSIClamping width - inch0.238CoatingBrightConnection diameter - inch (DCON MS)0.318Connection diameter - millimeter (DCON MS)8.08Flute count (NOF)4Flute Geometry (FDC)Straight Flute GeometryHand (Cutting direction)RightMaterialHSSOverall length - fractional inch (OAL)2.23/32Overall length - inch (OAL)2.7188ShankCylindrical shank with SquareTap chamfer style (TCS)plug chamfer three to six pitchThread diameter size (TDZ)5/16Thread form (THFT)UNC - Unified CoarseThreading length - fractional inch (THL)1.1/8Threads per inch (TPI)18Tolerance limitH11Usable length (ULDR)1.5
| Basic Standard | ANSI |
| Clamping width - inch | 0.238 |
| Coating | Bright |
| Connection diameter - inch (DCON MS) | 0.318 |
| Connection diameter - millimeter (DCON MS) | 8.08 |
| Flute count (NOF) | 4 |
| Flute Geometry (FDC) | Straight Flute Geometry |
| Hand (Cutting direction) | Right |
| Material | HSS |
| Overall length - fractional inch (OAL) | 2.23/32 |
| Overall length - inch (OAL) | 2.7188 |
| Shank | Cylindrical shank with Square |
| Tap chamfer style (TCS) | plug chamfer three to six pitch |
| Thread diameter size (TDZ) | 5/16 |
| Thread form (THFT) | UNC - Unified Coarse |
| Threading length - fractional inch (THL) | 1.1/8 |
| Threads per inch (TPI) | 18 |
| Tolerance limit | H11 |
| Usable length (ULDR) | 1.5 |