E559NO6 - 1/2-20 Dormer HSS Straight Flute Hand Tap Set UNF
E559UNF1/2NO6
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) | 1/2 |
Threads Per Inch (TPI) | 20 |
Overall Length (OAL) | 89.0mm |
Thread Diameter (TD) | 12.70mm |
Threading Length (THL) | 29mm |
Connection Diameter (DCON MS) | 9.0mm |
Clamping Width (WSC) | 7.10mm |
Clamping Length (LSC) | 10mm |
Flute Count (NOF) | 4 |
Pre-machined Hole Diameter (PHD) | 11.50mm |
Usable Length (LU) | - |
E559UNF1/2NO6
E559NO6 - 1/2-20 DORMER HSS STRAIGHT FLUTE HAND TAP SET UNF