Steam Tempered (Steam Oxide) Surface Treatment
E238M8
M Machine Tap Spiral Flute 40°, Back Tapered, Blue Shark
Ordering number: 6305811
Spiral flute tap Blue Shark with chamfer form C with a 2-3xP plug lead, for ISO-Metric thread M8 with 1.25 mm pitch and 6H class of fit, dimensions according to DIN 371 standard with 8.0mm shank and 6.2mm square drive, powder metallurgical HSS-E with steam tempered surface finish and 40° helix angle for 2.5xD blind hole threading in stainless steel
Product Feature
Thread Form, Metric Coarse
DIN 371 – Thread Form Standard
DIN Thread Pitch Diameter Tolerance Zone (high basic pitch diameter)
Blind Hole Application
2.5×D Usable Tool Depth to Diameter Ratio
High Speed Cobalt Powder Metal Tool Material
Semi-Bottoming Tap Chamfer (2 – 3 Pitch Lead)
Spiral Flute Geometry
40° Helix Angle (Flute)
Right Hand Rotation / Cutting
Product Detail
Description | Value |
|---|---|
| Product name | E238M8 |
| EDP number | 46305811 |
| EAN number | 7320760664162 |
| Product Line | SHARK |
| Thread diameter size (TDZ) | 8 |
| Thread pitch - millimeter (TP) | 1.25 mm |
| Overall length - millimeter (OAL) | 90 mm |
| Overall length - inch (OAL) | 3.5433 inch |
| Threading length - millimeter (THL) | 12 mm |
| Threading length - inch (THL) | 0.4724 inch |
| Connection diameter - inch (DCON MS) | 0.315 inch |
| Connection diameter - millimeter (DCON MS) | 8 mm |
| Flute count (NOF) | 3 |
| Usable Length - inch (LU) | 1.2992 inch |
| Usable Length - millimeter (LU) | 33 mm |
| Clamping width - inch (WSC) | 0.2441 inch |
| Clamping width - millimeter (WSC) | 6.2 mm |
| Clamping Length - inch (LCS) | 0.3543 inch |
| Clamping Length - millimeter (LSC) | 9 mm |
| Premachined hole diameter - inch (PHD) | 0.2677 inch |
| Premachined hole diameter - millimeter (PHD) | 6.8 mm |
| Gross weight - grams | 32.4 |
| ANSI | E238M8 |
| ISO | E238M8 |
| Ordering code ANSI | E238M8 |
Cutting Conditions
| Suitability | vc | f | |
|---|---|---|---|
| P2.3 - Plain high carbon steel containing > 0.55%C, with a hardness of < 300HB | Possible use | 23 ft/min |
| Suitability | vc | f | |
|---|---|---|---|
| P3.3 - Alloy steel with a hardness of 260 - 360HB | Possible use | 30 ft/min |
| Suitability | vc | f | |
|---|---|---|---|
| P4.1 - Tool steel with a hardness of < 26HRC | Possible use | 26 ft/min | |
| P4.2 - Tool steel with a hardness of 26 - 39RC | Possible use | 23 ft/min |
| Suitability | vc | f | |
|---|---|---|---|
| M1.1 - Stainless steel, ferritic with a hardness of < 160HB | Primary use | 33 ft/min | |
| M1.2 - Stainless steel, ferritic with a hardness of 160 - 220HB | Primary use | 26 ft/min |
| Suitability | vc | f | |
|---|---|---|---|
| M2.1 - Stainless steel, martensitic with a hardness of < 200HB | Primary use | 30 ft/min | |
| M2.2 - Stainless steel, martensitic with a hardness of 200 - 280HB | Primary use | 23 ft/min |
| Suitability | vc | f | |
|---|---|---|---|
| M3.1 - Stainless steel, austenitic with a hardness of < 200HB | Primary use | 23 ft/min | |
| M3.2 - Stainless steel, austenitic with a hardness of 200 - 260HB | Primary use | 20 ft/min | |
| M3.3 - Stainless steel, austenitic with a hardness of 260 - 300HB | Primary use | 16 ft/min |
| Suitability | vc | f | |
|---|---|---|---|
| M4.1 - Stainless steel, austenitic-ferritic or super-austenitic with a hardness of < 300HB | Primary use | 13 ft/min |