CAT-SET

THREADING | Indexable Thread Mills

Recommended Drilling Data | Metric (mm)

POSITIVE RAKE

Recommended Feed (mm/tooth) by CuƩer Diameter

1-2 flutes

3 flutes

5 flutes

7 flutes

8 flutes

Machinability*

1 flute

9.53

12.71

19.06 25.41 38.11 50.81 69.86

to

to

to

to

to

to

to

Hardness (BHN)

Speed (m/min)

ISO Material

12.70

19.05 25.40 38.10 50.80 69.85 88.90

E20

100 - 150 Easy 150 - 200 Easy 200 - 250 Easy 85 - 125 Average 125 - 175 Average 175 - 225 Average 225 - 275 Average 125 - 175 Average 175 - 225 Average 225 - 275 Average 275 - 325 Average 125 - 175 Average 175 - 225 Average 225 - 275 Average

274 0.020 0.025 0.030 0.038 0.051 0.064 0.076 213 0.020 0.025 0.030 0.038 0.051 0.064 0.076 152 0.020 0.025 0.030 0.038 0.051 0.064 0.076 274 0.020 0.025 0.030 0.038 0.051 0.064 0.076 213 0.020 0.025 0.030 0.038 0.051 0.064 0.076 183 0.020 0.025 0.030 0.038 0.051 0.064 0.076 152 0.020 0.025 0.030 0.038 0.051 0.064 0.076 175 0.020 0.023 0.025 0.030 0.038 0.051 0.064 152 0.020 0.023 0.025 0.030 0.038 0.051 0.064 137 0.020 0.023 0.025 0.030 0.038 0.051 0.064 122 0.020 0.023 0.025 0.030 0.038 0.051 0.064 175 0.020 0.023 0.025 0.030 0.038 0.051 0.064 152 0.020 0.023 0.025 0.030 0.038 0.051 0.064 137 0.020 0.023 0.025 0.030 0.038 0.051 0.064 122 0.020 0.023 0.025 0.030 0.038 0.051 0.064 114 0.020 0.023 0.025 0.030 0.038 0.051 0.064 137 0.020 0.023 0.025 0.030 0.038 0.051 0.064 122 0.020 0.023 0.025 0.030 0.038 0.051 0.064 107 0.020 0.023 0.025 0.030 0.038 0.051 0.064 183 0.020 0.025 0.030 0.038 0.051 0.064 0.076 152 0.020 0.025 0.030 0.038 0.051 0.064 0.076 137 0.020 0.025 0.030 0.038 0.051 0.064 0.076 160 0.013 0.018 0.023 0.038 0.051 0.064 0.076 152 0.013 0.018 0.023 0.038 0.051 0.064 0.076 0.013 0.018 0.023 0.038 0.051 0.064 0.076 0.013 0.018 0.023 0.038 0.051 0.064 0.076 175 0.020 0.025 0.030 0.038 0.051 0.064 0.076 152 0.020 0.025 0.030 0.038 0.051 0.064 0.076 206 0.020 0.030 0.038 0.051 0.076 0.102 0.127 191 0.020 0.030 0.038 0.051 0.076 0.102 0.127 175 0.020 0.030 0.038 0.051 0.076 0.102 0.127 152 0.020 0.030 0.038 0.051 0.076 0.102 0.127 145 0.020 0.030 0.038 0.051 0.076 0.102 0.127 335 0.038 0.051 0.064 0.076 0.102 0.127 0.152 305 0.038 0.051 0.064 0.076 0.102 0.127 0.152 191 0.038 0.051 0.064 0.076 0.102 0.127 0.152 335 0.051 0.064 0.076 0.102 0.114 0.140 0.165 0.013 0.015 0.020 0.025 0.038 0.051 0.064 0.013 0.015 0.020 0.025 0.038 0.051 0.064 91 46 37 27

Free-Machining Steel 1118, 1215, 12L14, etc.

Low-Carbon Steel 1010, 1020, 1025, 1522, 1144, etc.

Medium-Carbon Steel 1030, 1040, 1050, 1527, 1140, 1151, etc.

P

Alloy Steel 4140, 5140, 8640, etc.

275 - 325 325 - 375 300 - 350 350 - 400 250 - 350 135 - 185 185 - 275 185 - 275 275 - 325 150 - 200 200 - 250

Difficult Difficult Difficult Difficult Difficult Difficult Difficult Difficult Difficult Difficult Difficult

225 - 300 Average

High-Strength Alloy 4340, 4330V, 300M, etc.

100 - 150 Average 150 - 250 Average

Structural Steel A36, A285, A516, etc.

Stainless Steel 303, 416, 420, etc. Stainless Steel PH 17-4, etc. Tool Steel H-13, H21, A-4, etc. Cast Iron Grey, DucƟle, Nodular

M

120 - 150 Easy 150 - 200 Easy 200 - 220 Easy 220 - 260 Average 260 - 320 Average

K

30

Easy Easy Easy

Wrought Aluminum 6061 T6 Cast Aluminum** up to 10% silicon

180 120

N

Brass

30 - 125 Easy

High-Temp Alloy Hastelloy® B, Inconel® 600, etc.

140 - 220 220 - 310

Difficult Difficult

S

NOTICE: Reduce feed and speed by 30% for tapered thread forms due to addiƟonal material removal. *Refer to recommended pass chart on page xiv when referencing material machinability. **Uncoated thread mills are recommended for cast aluminum applicaƟons.

E20: 19

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