Bright (uncoated)
Plug lead hand tap UNC 5/16", bright finish HSS according ISO 529 for medium strength, medium carbon and alloy steel
Material ID: 8522481
Straight flute ECON hand tap with 4-6xP plug lead, for Unified National Coarse thread UNC 5/16" with 18 TPI and 2B class of fit, dimensions according to ISO 529 standard with 8 mm shank and 6.3 mm square drive, HSS with bright finish for 1.5XD through or blind hole threading as a first choice for medium strength, medium carbon and alloy steel
Thread Form, Unified Coarse
ISO 529 – Tap Standard
Internal Inch Thread Medium Class of Fit
Through or Blind Hole Application
1.5×D Usable Tool Depth to Diameter Ratio
High Speed Steel Tool Material
Plug Tap Chamfer (3.5 – 5 Pitch Lead)
Straight Flute Geometry
Right Hand Rotation / Cutting
| Product name | E559UNC5/16NO2 |
| Thread diameter size (TDZ) | 42491 |
| Threads per inch (TPI) | 18 |
| Overall length - millimeter (OAL) | 72 mm |
| Thread diameter - millimeter (TD) | 7.937 mm |
| Threading length - millimeter (THL) | 22 mm |
| Connection diameter - millimeter (DCON MS) | 8 mm |
| Clamping width - millimeter (WSC) | 6.3 mm |
| Clamping Length - millimeter (LSC) | 9 mm |
| Flute count (NOF) | 4 |
| Premachined hole diameter - millimeter (PHD) | 6.6 mm |
| Usable Length - millimeter (LU) | 35 mm |