AT-1 Advanced Performance Taps for a Variety of Materials
List 16625 AT-1, Helical Flute
SPEED FEED P21
h6 SHANK
CARBIDE EgiAs
11˚
Type 1
Type 2
Lc
Lc
L1
L
L
Units: Inch
Cutter Diameter
Overall Length
Length of Cut
Neck Length
Shank Diameter
EDP Number
No. of Flutes
Size reads Per Inch
Type
D
L
Lc
L1
d
EgiAs
20 28 18 24 16 24 13 20 11 18 10 16
0.600 0.607 0.778 0.750 0.875 1.154 1.100 1.454 1.389 1.700 1.626 2.250 2.167
0.700 0.680 0.889 0.833 1.000 0.958 1.308 1.200 1.636 1.500 1.900 1.750 2.500 2.334
OSG1662500017 OSG1662500117 OSG1662500317 OSG1662500417 OSG1662500617 OSG1662500717 OSG1662501217 OSG1662501317 OSG1662501817 OSG1662501917 OSG1662502117 OSG1662502217 OSG1662502717 OSG1662502917
1/4
0.179
3.000
1/4
5/16
0.224
4
1
3/8
0.264
5/16
3.500
1/2
0.343
3/8
5/8
0.421
5
1
3/4
0.461
8
1
0.736
6.000
3/4
6
12
Packed: 1 pc. Available in EgiAs coating only. For internal threads only.
ATP
Work Material
P
M
K
N
S
H
Carbon Steels
Alloy Steels Die Steels
Stainless Steels
Aluminum Nickel Alloy Titanium
Hardened Steels
Cast Iron
Low Med.
High
List No.
1010 1018
1035 1045 1065
4140 4340
6061 7075 Casting Inconel
6Al4V (30 HRC)
~35 HRC
35-45 HRC
45-50 HRC
50-70 HRC
300 400 17-4 PH
16625
good
best
10
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