Thread Milling Product Catalog

THREADING | Indexable Thread Mills

Recommended Drilling Data | Imperial (in)

NEUTRAL RAKE

Recommended Feed (inch/tooth) by Cutter Diameter 3 flutes 5 flutes 6 flutes

Machinability*

1.000"

1.500"

2.000"

to

to

to

Hardness (BHN)

Speed (SFM)

ISO Material

1.499" 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.038 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.076 0.076 0.076 0.076 0.076 0.102 0.102 0.102 0.114 0.038 0.038

1.999" 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.051 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.102 0.102 0.102 0.102 0.102 0.127 0.127 0.127 0.140 0.051 0.051

2.750" 0.076 0.076 0.076 0.076 0.076 0.076 0.076 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.076 0.076 0.076 0.076 0.076 0.076 0.076 0.076 0.076 0.127 0.127 0.127 0.127 0.127 0.152 0.152 0.152 0.165 0.064 0.064

E20

100 - 150 Easy 150 - 200 Easy 200 - 250 Easy

274 213 152 274 213 183 152 175 152 137 122 175 152 137 122 114 137 122 107 183 152 137 160 152 175 152 206 191 175 152 145 335 305 191 335 91 46

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

85 - 125 125 - 175 175 - 225 225 - 275 125 - 175 175 - 225 225 - 275 275 - 325 125 - 175 175 - 225 225 - 275

Average Average Average Average Average Average Average Average Average Average Average

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 Difficult 325 - 375 Difficult 300 - 350 Difficult 350 - 400 Difficult 250 - 350 Difficult 135 - 185 Difficult 185 - 275 Difficult 185 - 275 Difficult 275 - 325 Difficult 150 - 200 Difficult 200 - 250 Difficult 120 - 150 Easy 150 - 200 Easy 225 - 300 Average 100 - 150 150 - 250 Average Average

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

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, Ductile, Nodular

M

200 - 220 220 - 260 260 - 320

Easy

K

Average Average

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

37 27

S

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

www.alliedmachine.com | 1.330.343.4283

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