Thread Milling

THREADING | Solid Carbide and Indexable Thread Mills

Recommended Cutting Data | Imperial (inch) Solid Carbide | AccuThread® 856

A

DRILLING

Recommended Feed (inch/tooth) by Cutter Diameter

Machinability*

0.060" to 0.125"

0.126" to 0.188"

0.189" to 0.250"

0.251" to 0.312"

0.313" to 0.375"

0.376" to 0.500"

0.501" to 0.625"

0.626" to 0.750"

Hardness (BHN)

Speed (SFM)

ISO Material

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

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

900 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 700 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 500 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 900 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 700 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 600 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 500 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 500 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 450 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 400 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 500 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 450 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 400 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 375 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 450 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 400 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 350 0.0004 0.0005 0.0006 0.0008 0.0010 0.0013 0.0018 0.0020 600 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 500 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 450 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 120 0.0003 0.0004 0.0006 0.0008 0.0009 0.0010 0.0012 0.0015 90 0.0003 0.0004 0.0006 0.0008 0.0009 0.0010 0.0012 0.0015 525 0.0004 0.0005 0.0006 0.0008 0.0009 0.0010 0.0015 0.0020 500 0.0004 0.0005 0.0006 0.0008 0.0009 0.0010 0.0015 0.0020 300 0.0004 0.0005 0.0006 0.0008 0.0009 0.0010 0.0015 0.0020 150 0.0004 0.0005 0.0006 0.0008 0.0009 0.0010 0.0015 0.0020 575 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 500 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 675 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 625 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 575 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 500 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 0.0004 0.0005 0.0007 0.0009 0.0010 0.0015 0.0020 0.0025 1100 0.0005 0.0006 0.0009 0.0010 0.0015 0.0020 0.0025 0.0030 1000 0.0005 0.0006 0.0009 0.0010 0.0015 0.0020 0.0025 0.0030 625 0.0005 0.0006 0.0009 0.0010 0.0015 0.0020 0.0025 0.0030 1100 0.0005 0.0006 0.0009 0.0010 0.0015 0.0020 0.0025 0.0030

B

Low Carbon Steel

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

1010, 1020, 1025, 1522, 1144

BORING

Medium Carbon Steel

Average 575

1010, 1040, 1050, 1527, 1140

P

Alloy Steel

Average 575

4140, 5140, 8640

Average Average

C

275 - 325 Difficult 325 - 375 Difficult

High Strength Alloy 4340, 4330V, 300M

225 - 300

Average

REAMING

300 - 350 Difficult 350 - 400 Difficult

Structural Steel A36, A285, A516

100 - 150 150 - 250

Average Average

250 - 350 Difficult

S High Temp Alloy

140 - 220 Difficult 220 - 310 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 200 - 220 Easy

Hastelloy B, Inconel 600

Stainless Steel 303, 416, 420

D

Stainless Steel PH

M

17-4 BURNISHING

Tool Steel

H-13, H21, A-4

Cast Iron

Grey, Ductile, Nodular

K

220 - 260 260 - 320

Average

Average 475

Wrought Aluminum

30

Easy Easy Easy Easy

E

6061 T6

180 120

N

Cast Aluminum** up to 10% silicon

THREADING

Brass

30 - 125

NOTICE: Reduce feed and speed by 30% for tapered thread forms due to additional material removal *Refer to recommended pass chart on page E: 45 when referencing material machinability **Uncoated thread mills are recommended for cast aluminum applications

X

SPECIALS

E: 54

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