HSCo Multi Special UNC thread machine tap for through holes
Machine tap, HSCo, multi UNC, form B
MATAP-THRGHO-DIN371-UNC-MULTI-1/4-20
ZEBRA
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For work in an extensive range of materials
The universal geometry allows processing of many different materials.
Long service life and good process reliability
The X allowance ensures an increased service life and process reliability.
Very good adhesion of coolants and lubricants as well as reduced tendency for build-up of materials
The vaporised surface enables coolants and lubricants to stick well and reduces the tendency for deposits to build up.
Sufficient coolant and lubricant must be added when cutting threads.
Datasheets(X)
Before reversing the screw tap, the entire spiral point of the tool must be removed from the drill hole. Failure to do so may cause cutting edges to chip or the tool to break.
Thread type | UNC |
Material to be processed | Steel |
Hole type | Clearance hole ≤ 3xD |
Suitable for machine type | Milling/drill center |
Quality | ZEBRA-Premium |
Thread type x nominal diameter in inches | UNC 1/4 in |
Number of thread starts per inch | 20 |
Length | 80 mm |
Shank diameter | 7 mm |
Size of square | 5.5 mm |
DIN | 371 |
Cutting material | HSCo |
Surface | Vaporised |
Form | B |
Core hole diameter | 5.1 mm |
Shank style | Cylindrical with square drive |
Tolerance of screw taps | 2BX |
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) | 3 of 4 points |
Cutting behaviour (points system) | 3 of 4 points |
Chip formation (points system) | 2 of 4 points |
Material of sub-group | General structural steels |
Cutting values | ||||||||||||
For 4-40 UNC to 8-32 UNC | ||||||||||||
Material name | Tensile strength | 4-40 UNC | 6-32 UNC | 8-32 UNC | ||||||||
vc | n | f | n | f | n | f | ||||||
from | to | from | to | from | to | from | to | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 20 | 50 | 2242 | 5604 | 0,64 | 1819 | 4547 | 0,79 | 1527 | 3817 | 0,79 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 20 | 50 | 2242 | 5604 | 0,64 | 1819 | 4547 | 0,79 | 1527 | 3817 | 0,79 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 20 | 50 | 2242 | 5604 | 0,64 | 1819 | 4547 | 0,79 | 1527 | 3817 | 0,79 |
Unalloyed heat-treated steels | ≤ 1,000 N/mm² | 20 | 50 | 2242 | 5604 | 0,64 | 1819 | 4547 | 0,79 | 1527 | 3817 | 0,79 |
Low-alloy heat-treated steels | ≤ 1,000 N/mm² | 20 | 50 | 2242 | 5604 | 0,64 | 1819 | 4547 | 0,79 | 1527 | 3817 | 0,79 |
Alloyed heat-treated steels | ≤ 1200 N/mm² | 5 | 20 | 560 | 2242 | 0,64 | 455 | 1819 | 0,79 | 382 | 1527 | 0,79 |
Nitriding steels | ≤ 1,200 N/mm² | 5 | 20 | 560 | 2242 | 0,64 | 455 | 1819 | 0,79 | 382 | 1527 | 0,79 |
Tool steels | ≤ 1,200 N/mm² | 5 | 20 | 560 | 2242 | 0,64 | 455 | 1819 | 0,79 | 382 | 1527 | 0,79 |
High-speed steels | ≤ 1,200 N/mm² | 5 | 20 | 560 | 2242 | 0,64 | 455 | 1819 | 0,79 | 382 | 1527 | 0,79 |
High-grade steels | ||||||||||||
Stainless steels | ≤ 1,200 N/mm² | 6 | 10 | 672 | 1,121 | 0,64 | 546 | 909 | 0,79 | 458 | 763 | 0,79 |
Titanium | ≤ 850 N/mm² | 4 | 6 | 448 | 672 | 0,64 | 364 | 546 | 0,79 | 305 | 458 | 0,79 |
Special alloys | ≤ 1,200 N/mm² | 3 | 10 | 336 | 1,121 | 0,64 | 273 | 909 | 0,79 | 229 | 763 | 0,79 |
Cast metals | ||||||||||||
Cast iron | ≤ 300 HB | 20 | 50 | 2,242 | 5,604 | 0,64 | 1,819 | 4,547 | 0,79 | 1,527 | 3,817 | 0,79 |
Nodular graphite and malleable iron | ≤ 350 HB | 20 | 50 | 2242 | 5604 | 0,64 | 1819 | 4547 | 0,79 | 1527 | 3817 | 0,79 |
Non-ferrous metals | ||||||||||||
Aluminium | ≤ 450 N/mm² | 20 | 40 | 2242 | 4483 | 0,64 | 1819 | 3638 | 0,79 | 1527 | 3053 | 0,79 |
Aluminium alloys | ≤ 450 N/mm² | 10 | 30 | 1121 | 3362 | 0,64 | 909 | 2728 | 0,79 | 763 | 2290 | 0,79 |
Wrought aluminium alloys | ≤ 400 N/mm² | 20 | 30 | 2242 | 3362 | 0,64 | 1819 | 2728 | 0,79 | 1527 | 2290 | 0,79 |
Aluminium cast alloys <= 10 % Si | ≤ 600 N/mm² | 20 | 30 | 2242 | 3362 | 0,64 | 1819 | 2728 | 0,79 | 1527 | 2290 | 0,79 |
Copper, low-alloy | ≤ 400 N/mm² | 10 | 30 | 1121 | 3362 | 0,64 | 909 | 2728 | 0,79 | 763 | 2290 | 0,79 |
Brass, long-chipping | ≤ 600 N/mm² | 20 | 50 | 2242 | 5604 | 0,64 | 1819 | 4547 | 0,79 | 1527 | 3817 | 0,79 |
Bronze, long-chipping | ≤ 1,000 N/mm² | 10 | 30 | 1121 | 3362 | 0,64 | 909 | 2728 | 0,79 | 763 | 2290 | 0,79 |
Plastics | ||||||||||||
Plastics, duroplastic | 10 | 15 | 1121 | 1681 | 0,64 | 909 | 1364 | 0,79 | 763 | 1145 | 0,79 | |
Plastics, thermoplastic | 20 | 30 | 2242 | 3362 | 0,64 | 1819 | 2728 | 0,79 | 1527 | 2290 | 0,79 |
For 10-24 UNC to 5/16-18 UNC | ||||||||||||
Material name | Tensile strength | 10-24 UNC | 1/4-20 UNC | 5/16-18 UNC | ||||||||
vc | n | f | n | f | n | f | ||||||
from | to | from | to | from | to | from | to | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 20 | 50 | 1318 | 3295 | 1,06 | 1003 | 2506 | 1,27 | 802 | 2004 | 1,41 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 20 | 50 | 1318 | 3295 | 1,06 | 1003 | 2506 | 1,27 | 802 | 2004 | 1,41 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 20 | 50 | 1318 | 3295 | 1,06 | 1003 | 2506 | 1,27 | 802 | 2004 | 1,41 |
Unalloyed heat-treated steels | ≤ 1,000 N/mm² | 20 | 50 | 1318 | 3295 | 1,06 | 1003 | 2506 | 1,27 | 802 | 2004 | 1,41 |
Low-alloy heat-treated steels | ≤ 1,000 N/mm² | 20 | 50 | 1318 | 3295 | 1,06 | 1003 | 2506 | 1,27 | 802 | 2004 | 1,41 |
Alloyed heat-treated steels | ≤ 1200 N/mm² | 5 | 20 | 330 | 1318 | 1,06 | 251 | 1003 | 1,27 | 200 | 802 | 1,41 |
Nitriding steels | ≤ 1,200 N/mm² | 5 | 20 | 330 | 1318 | 1,06 | 251 | 1003 | 1,27 | 200 | 802 | 1,41 |
Tool steels | ≤ 1,200 N/mm² | 5 | 20 | 330 | 1318 | 1,06 | 251 | 1003 | 1,27 | 200 | 802 | 1,41 |
High-speed steels | ≤ 1,200 N/mm² | 5 | 20 | 330 | 1318 | 1,06 | 251 | 1003 | 1,27 | 200 | 802 | 1,41 |
High-grade steels | ||||||||||||
Stainless steels | ≤ 1,200 N/mm² | 6 | 10 | 395 | 659 | 1,06 | 301 | 501 | 1,27 | 241 | 401 | 1,41 |
Titanium | ≤ 850 N/mm² | 4 | 6 | 264 | 395 | 1,06 | 201 | 301 | 1,27 | 160 | 241 | 1,41 |
Special alloys | ≤ 1,200 N/mm² | 3 | 10 | 198 | 659 | 1,06 | 150 | 501 | 1,27 | 120 | 401 | 1,41 |
Cast metals | ||||||||||||
Cast iron | ≤ 300 HB | 20 | 50 | 1,318 | 3,295 | 1,06 | 1,003 | 2,506 | 1,27 | 802 | 2,004 | 1,41 |
Nodular graphite and malleable iron | ≤ 350 HB | 20 | 50 | 1318 | 3295 | 1,06 | 1003 | 2506 | 1,27 | 802 | 2004 | 1,41 |
Non-ferrous metals | ||||||||||||
Aluminium | ≤ 450 N/mm² | 20 | 40 | 1318 | 2636 | 1,06 | 1003 | 2005 | 1,27 | 802 | 1604 | 1,41 |
Aluminium alloys | ≤ 450 N/mm² | 10 | 30 | 659 | 1977 | 1,06 | 501 | 1504 | 1,27 | 401 | 1203 | 1,41 |
Wrought aluminium alloys | ≤ 400 N/mm² | 20 | 30 | 1318 | 1977 | 1,06 | 1003 | 1504 | 1,27 | 802 | 1203 | 1,41 |
Aluminium cast alloys <= 10 % Si | ≤ 600 N/mm² | 20 | 30 | 1318 | 1977 | 1,06 | 1003 | 1504 | 1,27 | 802 | 1203 | 1,41 |
Copper, low-alloy | ≤ 400 N/mm² | 10 | 30 | 659 | 1977 | 1,06 | 501 | 1504 | 1,27 | 401 | 1203 | 1,41 |
Brass, long-chipping | ≤ 600 N/mm² | 20 | 50 | 1318 | 3295 | 1,06 | 1003 | 2506 | 1,27 | 802 | 2004 | 1,41 |
Bronze, long-chipping | ≤ 1,000 N/mm² | 10 | 30 | 659 | 1977 | 1,06 | 501 | 1504 | 1,27 | 401 | 1203 | 1,41 |
Plastics | ||||||||||||
Plastics, duroplastic | 10 | 15 | 659 | 989 | 1,06 | 501 | 752 | 1,27 | 401 | 601 | 1,41 | |
Plastics, thermoplastic | 20 | 30 | 1318 | 1977 | 1,06 | 1003 | 1504 | 1,27 | 802 | 1203 | 1,41 |
For 3/8-16 UNC to 1/2-13 UNC | ||||||||||||
Material name | Tensile strength | 3/8-16 UNC | 7/16-14 UNC | 1/2-13 UNC | ||||||||
vc | n | f | n | f | n | f | ||||||
from | to | from | to | from | to | from | to | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 20 | 50 | 668 | 1670 | 1,59 | 573 | 1433 | 1,81 | 501 | 1253 | 1,95 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 20 | 50 | 668 | 1670 | 1,59 | 573 | 1433 | 1,81 | 501 | 1253 | 1,95 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 20 | 50 | 668 | 1670 | 1,59 | 573 | 1433 | 1,81 | 501 | 1253 | 1,95 |
Unalloyed heat-treated steels | ≤ 1,000 N/mm² | 20 | 50 | 668 | 1670 | 1,59 | 573 | 1433 | 1,81 | 501 | 1253 | 1,95 |
Low-alloy heat-treated steels | ≤ 1,000 N/mm² | 20 | 50 | 668 | 1670 | 1,59 | 573 | 1433 | 1,81 | 501 | 1253 | 1,95 |
Alloyed heat-treated steels | ≤ 1200 N/mm² | 5 | 20 | 167 | 668 | 1,59 | 143 | 573 | 1,81 | 125 | 501 | 1,95 |
Nitriding steels | ≤ 1,200 N/mm² | 5 | 20 | 167 | 668 | 1,59 | 143 | 573 | 1,81 | 125 | 501 | 1,95 |
Tool steels | ≤ 1,200 N/mm² | 5 | 20 | 167 | 668 | 1,59 | 143 | 573 | 1,81 | 125 | 501 | 1,95 |
High-speed steels | ≤ 1,200 N/mm² | 5 | 20 | 167 | 668 | 1,59 | 143 | 573 | 1,81 | 125 | 501 | 1,95 |
High-grade steels | ||||||||||||
Stainless steels | ≤ 1,200 N/mm² | 6 | 10 | 200 | 334 | 1,59 | 172 | 287 | 1,81 | 150 | 251 | 1,95 |
Titanium | ≤ 850 N/mm² | 4 | 6 | 134 | 200 | 1,59 | 115 | 172 | 1,81 | 100 | 150 | 1,95 |
Special alloys | ≤ 1,200 N/mm² | 3 | 10 | 100 | 334 | 1,59 | 86 | 287 | 1,81 | 75 | 251 | 1,95 |
Cast metals | ||||||||||||
Cast iron | ≤ 300 HB | 20 | 50 | 668 | 1670 | 1,59 | 573 | 1433 | 1,81 | 501 | 1253 | 1,95 |
Nodular graphite and malleable iron | ≤ 350 HB | 20 | 50 | 668 | 1670 | 1,59 | 573 | 1433 | 1,81 | 501 | 1253 | 1,95 |
Non-ferrous metals | ||||||||||||
Aluminium | ≤ 450 N/mm² | 20 | 40 | 668 | 1336 | 1,59 | 573 | 1146 | 1,81 | 501 | 1003 | 1,95 |
Aluminium alloys | ≤ 450 N/mm² | 10 | 30 | 334 | 1002 | 1,59 | 287 | 860 | 1,81 | 251 | 752 | 1,95 |
Wrought aluminium alloys | ≤ 400 N/mm² | 20 | 30 | 668 | 1002 | 1,59 | 573 | 860 | 1,81 | 501 | 752 | 1,95 |
Aluminium cast alloys <= 10 % Si | ≤ 600 N/mm² | 20 | 30 | 668 | 1002 | 1,59 | 573 | 860 | 1,81 | 501 | 752 | 1,95 |
Copper, low-alloy | ≤ 400 N/mm² | 10 | 30 | 334 | 1002 | 1,59 | 287 | 860 | 1,81 | 251 | 752 | 1,95 |
Brass, long-chipping | ≤ 600 N/mm² | 20 | 50 | 668 | 1670 | 1,59 | 573 | 1433 | 1,81 | 501 | 1253 | 1,95 |
Bronze, long-chipping | ≤ 1,000 N/mm² | 10 | 30 | 334 | 1002 | 1,59 | 287 | 860 | 1,81 | 251 | 752 | 1,95 |
Plastics | ||||||||||||
Plastics, duroplastic | 10 | 15 | 334 | 501 | 1,59 | 287 | 430 | 1,81 | 251 | 376 | 1,95 | |
Plastics, thermoplastic | 20 | 30 | 668 | 1002 | 1,59 | 573 | 860 | 1,81 | 501 | 752 | 1,95 |
For 5/8-11 UNC to 3/4-10 UNC | |||||||||
Material name | Tensile strength | 5/8-11 UNC | 3/4-10 UNC | ||||||
vc | n | f | n | f | |||||
from | to | from | to | from | to | ||||
Steels | |||||||||
General structural steels | ≤ 850 N/mm² | 20 | 50 | 401 | 1002 | 2,31 | 334 | 835 | 2,54 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 20 | 50 | 401 | 1002 | 2,31 | 334 | 835 | 2,54 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 20 | 50 | 401 | 1002 | 2,31 | 334 | 835 | 2,54 |
Unalloyed heat-treated steels | ≤ 1,000 N/mm² | 20 | 50 | 401 | 1002 | 2,31 | 334 | 835 | 2,54 |
Low-alloy heat-treated steels | ≤ 1,000 N/mm² | 20 | 50 | 401 | 1002 | 2,31 | 334 | 835 | 2,54 |
Alloyed heat-treated steels | ≤ 1200 N/mm² | 5 | 20 | 100 | 401 | 2,31 | 84 | 334 | 2,54 |
Nitriding steels | ≤ 1,200 N/mm² | 5 | 20 | 100 | 401 | 2,31 | 84 | 334 | 2,54 |
Tool steels | ≤ 1,200 N/mm² | 5 | 20 | 100 | 401 | 2,31 | 84 | 334 | 2,54 |
High-speed steels | ≤ 1,200 N/mm² | 5 | 20 | 100 | 401 | 2,31 | 84 | 334 | 2,54 |
High-grade steels | |||||||||
Stainless steels | ≤ 1,200 N/mm² | 6 | 10 | 120 | 200 | 2,31 | 100 | 167 | 2,54 |
Titanium | ≤ 850 N/mm² | 4 | 6 | 80 | 120 | 2,31 | 67 | 100 | 2,54 |
Special alloys | ≤ 1,200 N/mm² | 3 | 10 | 60 | 200 | 2,31 | 50 | 167 | 2,54 |
Cast metals | |||||||||
Cast iron | ≤ 300 HB | 20 | 50 | 401 | 1002 | 2,31 | 334 | 835 | 2,54 |
Nodular graphite and malleable iron | ≤ 350 HB | 20 | 50 | 401 | 1002 | 2,31 | 334 | 835 | 2,54 |
Non-ferrous metals | |||||||||
Aluminium | ≤ 450 N/mm² | 20 | 40 | 401 | 802 | 2,31 | 334 | 668 | 2,54 |
Aluminium alloys | ≤ 450 N/mm² | 10 | 30 | 200 | 601 | 2,31 | 167 | 501 | 2,54 |
Wrought aluminium alloys | ≤ 400 N/mm² | 20 | 30 | 401 | 601 | 2,31 | 334 | 501 | 2,54 |
Aluminium cast alloys <= 10 % Si | ≤ 600 N/mm² | 20 | 30 | 401 | 601 | 2,31 | 334 | 501 | 2,54 |
Copper, low-alloy | ≤ 400 N/mm² | 10 | 30 | 200 | 601 | 2,31 | 167 | 501 | 2,54 |
Brass, long-chipping | ≤ 600 N/mm² | 20 | 50 | 401 | 1002 | 2,31 | 334 | 835 | 2,54 |
Bronze, long-chipping | ≤ 1,000 N/mm² | 10 | 30 | 200 | 601 | 2,31 | 167 | 501 | 2,54 |
Plastics | |||||||||
Plastics, duroplastic | 10 | 15 | 200 | 301 | 2,31 | 167 | 251 | 2,54 | |
Plastics, thermoplastic | 20 | 30 | 401 | 601 | 2,31 | 334 | 501 | 2,54 |
Legend |
vc = 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. |