HSCo green-ring machine tap for blind holes DIN 371/376

Name: HSCo green-ring machine tap for blind holes DIN 371/376
Brand: Würth
SKU: 065508

Machine screw tap HSCo green form C
MATAP-BLIHO-HSCO-DIN371-GREEN-M8
ZEBRA

Art.-no. 065508

EAN 4011231542760

All versions

Specification

The low-priced machine tap for processing alloyed and high-alloyed steels (stainless steels), as well as rust-resistant and acid-resistant steels. Also suitable for processing conventional steel materials up to a strength of 850 N/mm².

Tool geometry precisely tailored to stainless steel with increased clearance angle

Extra homogeneous cutting edge rounding for a high process reliability and longer service life compared to comparable machine taps

Notice

Sufficient coolant and lubricant must be added when cutting threads.

For the machine tap/material assignments, see the overview tables

Technical information

Thread type	Metric thread
Material to be processed	Steel, Stainless steel
Hole type	Blind hole ≤ 2.5xD
Suitable for machine type	Milling/drill center, Pedestal drilling machine
Quality	ZEBRA-Premium
Thread type x nominal diameter	M8
Pitch	1.25 mm
Length	90 mm
Shank diameter	8.0 mm
Size of square	6.2 mm
DIN	371
Cutting material	HSCo
Surface	Plain
Form	C
Core hole diameter	6.8 mm
Twist angle	40° (right)
Shank style	Cylindrical with square drive
Tolerance of screw taps	ISO 2 (6H)
Suitable for tensile strength up to	1000 N/mm²
Service life (points system)	2 of 4 points
Trueness to gauge (points system)	4 of 4 points
Versatility (points system)	2 of 4 points
Cutting behaviour (points system)	3 of 4 points
Chip formation (points system)	2 of 4 points
Material of sub-group	Stainless steels, sulphurated, Stainless steels, austenitic, Stainless steels, martensitic

Key
v_c = cutting speed [m/min]
f = feed [mm/r]
n = rotation speed [rpm]
The suggested cutting values are reference values and must be adapted to the respective conditions.

For M20
Material designation	Tensile strength			M20
		v_c		n		f
		from	to	from	to
Steels
General structural steels	< 850 N/mm²	6	8	95	127	2,50
Unalloyed quenched and tempered steels	< 850 N/mm²	6	8	95	127	2,50
Low-alloy quenched and tempered steels	< 850 N/mm²	6	8	95	127	2,50
Unalloyed quenched and tempered steels	< 1,000 N/mm²	4	6	64	95	2,50
Low-alloy quenched and tempered steels	< 1,000 N/mm²	4	6	64	95	2,50
Alloyed quenched and tempered steels	< 1,200 N/mm²	4	6	64	95	2,50
Nitriding steels	< 1,200 N/mm²	4	6	64	95	2,50
Tool steels	< 1,200 N/mm²	4	6	64	95	2,50
High-speed steels	< 1,200 N/mm²	4	6	64	95	2,50
Stainless steels
Stainless steels	< 850 N/mm²	4	6	64	95	2,50

Cutting values
For M3-M5
Material designation	Tensile strength			M3			M4			M5
		v_c		n		f	n		f	n		f
		from	to	from	to		from	to		from	to
Steels
General structural steels	< 850 N/mm²	6	8	637	849	0,50	477	637	0,70	382	509	0,80
Unalloyed quenched and tempered steels	< 850 N/mm²	6	8	637	849	0,50	477	637	0,70	382	509	0,80
Low-alloy quenched and tempered steels	< 850 N/mm²	6	8	637	849	0,50	477	637	0,70	382	509	0,80
Unalloyed quenched and tempered steels	< 1,000 N/mm²	4	6	424	637	0,50	318	477	0,70	255	382	0,80
Low-alloy quenched and tempered steels	< 1,000 N/mm²	4	6	424	637	0,50	318	477	0,70	255	382	0,80
Alloyed quenched and tempered steels	< 1,200 N/mm²	4	6	424	637	0,50	318	477	0,70	255	382	0,80
Nitriding steels	< 1,200 N/mm²	4	6	424	637	0,50	318	477	0,70	255	382	0,80
Tool steels	< 1,200 N/mm²	4	6	424	637	0,50	318	477	0,70	255	382	0,80
High-speed steels	< 1,200 N/mm²	4	6	424	637	0,50	318	477	0,70	255	382	0,80
Stainless steels
Stainless steels	< 850 N/mm²	4	6	424	637	0,50	318	477	0,70	255	382	0,80

For M12-M16
Material designation	Tensile strength			M12			M14			M16
		v_c		n		f	n		f	n		f
		from	to	from	to		from	to		from	to
Steels
General structural steels	< 850 N/mm²	6	8	159	212	1,75	136	182	2,00	119	159	2,00
Unalloyed quenched and tempered steels	< 850 N/mm²	6	8	159	212	1,75	136	182	2,00	119	159	2,00
Low-alloy quenched and tempered steels	< 850 N/mm²	6	8	159	212	1,75	136	182	2,00	119	159	2,00
Unalloyed quenched and tempered steels	< 1,000 N/mm²	4	6	106	159	1,75	91	136	2,00	80	119	2,00
Low-alloy quenched and tempered steels	< 1,000 N/mm²	4	6	106	159	1,75	91	136	2,00	80	119	2,00
Alloyed quenched and tempered steels	< 1,200 N/mm²	4	6	106	159	1,75	91	136	2,00	80	119	2,00
Nitriding steels	< 1,200 N/mm²	4	6	106	159	1,75	91	136	2,00	80	119	2,00
Tool steels	< 1,200 N/mm²	4	6	106	159	1,75	91	136	2,00	80	119	2,00
High-speed steels	< 1,200 N/mm²	4	6	106	159	1,75	91	136	2,00	80	119	2,00
Stainless steels
Stainless steels	< 850 N/mm²	4	6	106	159	1,75	91	136	2,00	80	119	2,00

For M6-M10
Material designation	Tensile strength			M6			M8			M10
		v_c		n		f	n		f	n		f
		from	to	from	to		from	to		from	to
Steels
General structural steels	< 850 N/mm²	6	8	318	424	1,00	239	318	1,25	191	255	1,50
Unalloyed quenched and tempered steels	< 850 N/mm²	6	8	318	424	1,00	239	318	1,25	191	255	1,50
Low-alloy quenched and tempered steels	< 850 N/mm²	6	8	318	424	1,00	239	318	1,25	191	255	1,50
Unalloyed quenched and tempered steels	< 1,000 N/mm²	4	6	212	318	1,00	159	239	1,25	127	191	1,50
Low-alloy quenched and tempered steels	< 1,000 N/mm²	4	6	212	318	1,00	159	239	1,25	127	191	1,50
Alloyed quenched and tempered steels	< 1,200 N/mm²	4	6	212	318	1,00	159	239	1,25	127	191	1,50
Nitriding steels	< 1,200 N/mm²	4	6	212	318	1,00	159	239	1,25	127	191	1,50
Tool steels	< 1,200 N/mm²	4	6	212	318	1,00	159	239	1,25	127	191	1,50
High-speed steels	< 1,200 N/mm²	4	6	212	318	1,00	159	239	1,25	127	191	1,50
Stainless steels
Stainless steels	< 850 N/mm²	4	6	212	318	1,00	159	239	1,25	127	191	1,50