Product Similar To :
T640 • DIN 371 and 376 • Form C Semi-Bottoming Chamfer • Metric • For Cast Iron and Cast Aluminum
Beyond™ Straight-Flute HSS-E-PM Taps • Through and Blind Holes
Material Number4035468
ISO Catalog IDT640M200X250R6HX-D6ANSI Catalog IDT640M200X250R6HX-D6
- K Cast Iron
 - N Non-Ferrous
 Tapping: Through Hole
Threading: Blind Hole
Class of Fit: 6HX
DIN number 371
DIN number 376
Chamfer Form C (2–3)
HSS-E-PM
Manufacturer’s Specs: M
Flood Coolant: Tapping
Tapping Helix Angle: 0°
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| Material Number | 4035468 | 
| ISO Catalog ID | T640M200X250R6HX-D6 | 
| ANSI Catalog ID | T640M200X250R6HX-D6 | 
| Grade | KP6525 | 
| [D1-TDZ] Thread Diameter Size | M20 X 2.5 | 
| [L] Overall Length | 140 mm | 
| [L] Overall Length | 5.51 in | 
| [L3] Thread Length | 25 mm | 
| [L3] Thread Length | 0.98 in | 
| [L2] Useable Length | 64 mm | 
| [L2] Useable Length | 2.52 in | 
| [D] Adapter / Shank / Bore Diameter | 16 mm | 
| [D] Adapter / Shank / Bore Diameter | 0.6299 in | 
| [Z] Number of Flutes | 4 | 
| Dimension Standard | DIN 376 | 
| Thread Tolerance Class ISO | 6HX-I | 
Workpiece Materials
- Cast Iron
 - Non-Ferrous
 
Uses and application
Tapping: Through Hole
Threading: Blind Hole
Class of Fit: 6HX
DIN number 371
DIN number 376
Chamfer Form C (2–3)
HSS-E-PM
Manufacturer’s Specs: M
Flood Coolant: Tapping
Tapping Helix Angle: 0°
Grades
KP6525
Coated HSS-E-PM. PVD — heat- and wear-resistant high vanadium — cobalt powder metal HSS substrate coated with wear-resistant TiCN base layer and low-friction TiN top layer. Use in steel, cast iron, and cast aluminum with silicon.
Features and benefits
- KP6525 TiCN + TiN for cast iron and cast aluminum.
 
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Tolerance
| shank tolerance | |
| D fractional | D inch | 
| .250–.375 | +0, -.0004 | 
| .438–.625 | +0, -.0004 | 
| shank tolerance | |
| D | tolerance h6 + / - | 
| 6 | +0, -0,008 | 
| 8  | +0, -0,009 | 
| 12  | +0, -0,011 | 
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