Machine tap with straight flutes and spiral point



Thread UNF
Unified fine thread

Profile sketch
60°

Type N
Tap for steels up to 800 N/mm2

Tap material
Super high speed steel

Tap standard
~ DIN 374

Thread tolerance
2B

Chamfer B
Length 3,5-6 pitch

Hole type
Through hole (thread length L > 1,5xd1)
Catalogue number: 3505
Machine tap with straight flutes and spiral point, unified national fine thread, DIN 374, suitable for structural steels, plain cast steels, free cutting steels, short chipping copper alloys, spheroidal and malleable cast iron, aluminium alloys with Si<10 %
Download product data sheetSelect product model
Use
Machined material | Hole type | Cutting speed | Lubrication | Use |
---|---|---|---|---|
Aluminium alloys si content < 10% | through hole (thread length L > 1,5xd1) | 14-20 |
E
Lubrication
Emulsion
|
![]() Use
Recommended use
|
Aluminium alloys si content < 10% | through hole (thread length L < 1,5xd1) | 14-20 |
E
Lubrication
Emulsion
|
![]() Use
Recommended use
|
Aluminium alloys si content > 10% | through hole (thread length L < 1,5xd1) | 12-15 |
E
Lubrication
Emulsion
|
![]() Use
Possible use
|
Aluminium alloys si content > 10% | through hole (thread length L > 1,5xd1) | 12-15 |
E
Lubrication
Emulsion
|
![]() Use
Possible use
|
Copper alloys (short chipping) | through hole (thread length L < 1,5xd1) | 12-20 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Possible use
|
Copper alloys (short chipping) | through hole (thread length L > 1,5xd1) | 12-20 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Possible use
|
Free cutting steels up to 800 N/mm2 | through hole (thread length L > 1,5xd1) | 10-14 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Possible use
|
Free cutting steels up to 800 N/mm2 | through hole (thread length L < 1,5xd1) | 10-14 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Possible use
|
Plain cast steels up to 500 N/mm2 | through hole (thread length L > 1,5xd1) | 6-10 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Recommended use
|
Plain cast steels up to 500 N/mm2 | through hole (thread length L < 1,5xd1) | 6-10 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Recommended use
|
Plain cast steels up to 800 N/mm2 | through hole (thread length L < 1,5xd1) | 10-14 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Possible use
|
Plain cast steels up to 800 N/mm2 | through hole (thread length L > 1,5xd1) | 10-14 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Possible use
|
Spheroidal graphite cast iron and malleable cast iron | through hole (thread length L > 1,5xd1) | 4-7 |
E
Lubrication
Emulsion
|
![]() Use
Possible use
|
Spheroidal graphite cast iron and malleable cast iron | through hole (thread length L < 1,5xd1) | 4-7 |
E
Lubrication
Emulsion
|
![]() Use
Possible use
|
Spheroidal graphite cast iron and malleable cast iron | blind hole (thread length < 1,5 d1, pilot drilling depth ≥ L+d1) | 4-7 |
E
Lubrication
Emulsion
|
![]() Use
Possible use
|
Structural steels and heat-treated steels up to 800 N/mm2 | through hole (thread length L > 1,5xd1) | 10-14 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Recommended use
|
Structural steels and heat-treated steels up to 800 N/mm2 | through hole (thread length L < 1,5xd1) | 10-14 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Recommended use
|
Structural steels up to 500 N/mm2 | through hole (thread length L > 1,5xd1) | 5-8 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Possible use
|
Structural steels up to 500 N/mm2 | through hole (thread length L < 1,5xd1) | 5-8 |
O/E
Lubrication
Cutting Oil/Emulsion
|
![]() Use
Possible use
|