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Series | Pro Tap | |
Thread size | 1/4-28 UNF | |
Coating | TiN | |
Thread type | UNF | |
Flank angle | 60 degrees | |
Tool material | HSS E | |
Standard | DIN 371 | |
Tolerance class | 2B | |
Taper lead form | C | |
Helix angle | 40 degrees | |
Shank | Plain shank with h9 | |
Through-coolant | no | |
Application for type of drilling | up to 2.5×D for blind holes | |
Cutting direction | right-hand | |
Thread pitch | 0.907 mm | |
Threads per inch | 28 | |
Thread ⌀ | 6.35 mm | |
Overall length L | 80 mm | |
Shank ⌀ Ds | 7 mm | |
Shank square □ | 5.5 mm | |
Tapping hole ⌀ | 5.5 mm | |
Type of threading tool | Machine tap for dynamic machining | |
Number of clamping slots | 2 | |
Colour ring | green | |
Number of cutting edges Z | 2 | |
Thread depth | 15.9 mm | |
Type of product | Tap |
Article number | 138050 1/4-28 | |
EAN / GTIN | 4062406374907 | |
Manufacturer number | 138050 1/4-28 |
This article |
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Thread size | 1/4-28 UNF | 1/4-28 UNF | 1/4-28 UNF | 1/4-28 UNF | 1/4-28 UNF | 1/4-28 UNF |
Through-coolant | no | no | no | no | no | no |
Tapping hole ⌀ | 5.5 mm | 5.5 mm | 5.5 mm | 5.5 mm | 5.5 mm | 5.5 mm |
Standard | DIN 371 | DIN 371 | DIN 371 | DIN 371 | DIN 371 | DIN 371 |
Shank | Plain shank with h9 | Plain shank with h9 | Plain shank with h9 | Plain shank with h9 | Plain shank with h9 | Plain shank with h9 |
Tolerance class | 2B | 2BX | 2BX | 2BX | 2BX | 2B |
Series | Pro Tap | Master Tap | Master Tap | Master Tap | Master Tap | Pro Tap |