E559NO6 - 1/4-28 Dormer HSS Straight Flute Hand Tap Set UNF
E559UNF1/4NO6
E559NO6 (UNF)
The most versatile taps for hand use or machine tapping through or blind holes in medium strength, medium carbon and alloy steel. Set including taps with 3 different chamfer lengths; taper lead which is ideally for short through holes, plug perfect for deeper through holes and bottoming best suited for blind holes.

| Thread Diameter Size (TDZ) | 1/4 |
| Threads Per Inch (TPI) | 28 |
| Overall Length (OAL) | 66.0mm |
| Thread Diameter (TD) | 6.35mm |
| Threading Length (THL) | 19mm |
| Connection Diameter (DCON MS) | 6.30mm |
| Clamping Width (WSC) | 5.0mm |
| Clamping Length (LSC) | 8mm |
| Flute Count (NOF) | 3 |
| Pre-machined Hole Diameter (PHD) | 5.50mm |
| Usable Length (LU) | 30.0mm |
E559UNF1/4NO6
E559NO6 - 1/4-28 DORMER HSS STRAIGHT FLUTE HAND TAP SET UNF