Bright (uncoated)
HSS Straight Flute Hand Tap, UNC, ISO Standard
Material ID: 5976808
Straight flute hand tap NO2 with a 4-6xP second lead, for Unified National Coarse thread UNC 5/16" with 18 TPI and 2B class of fit, dimensions according to ISO 529 standard with 8.0mm shank and 6.3mm square drive, HSS with bright finish for 1.5xD through or blind hole threading in free machining and plain carbon steel and copper or copper alloys
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
Straight Flute Geometry
Right Hand Rotation / Cutting
| Product name | E5155/16NO2 |
| Product number (SAP) | 86016779 |
| EAN number | 7320760152713 |
| Ordering code ANSI | E5155/16NO2 |
| Thread diameter size (TDZ) | 5/16 |
| Thread diameter - millimeter (TD) | 7.938 mm |
| Threads per inch (TPI) | 18 |
| Overall length - millimeter (OAL) | 72 mm |
| Overall length - inch (OAL) | 2.8346 inch |
| Threading length - millimeter (THL) | 16 mm |
| Threading length - inch (THL) | 0.6299 inch |
| Connection diameter - inch (DCON MS) | 0.315 inch |
| Connection diameter - millimeter (DCON MS) | 8 mm |
| Flute count (NOF) | 3 |
| Usable Length - inch (LU) | 1.1417 inch |
| Usable Length - millimeter (LU) | 29 mm |
| Clamping width - inch (WSC) | 0.248 inch |
| Clamping width - millimeter (WSC) | 6.3 mm |
| Clamping Length - inch (LCS) | 0.3543 inch |
| Clamping Length - millimeter (LSC) | 9 mm |
| Premachined hole diameter - inch (PHD) | 0.2598 inch |
| Premachined hole diameter - millimeter (PHD) | 6.6 mm |
| Gross weight - grams | 27 |
| ISO | E5155/16NO2 |