Threading

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AccuThread™ 856 Bolt-In Style

Thread mills drastically reduce the occurrences of scrap when compared to taps, which makes them desirable when manufacturing large and/or costly components. AccuThread™ 856 are a premium thread milling product backed by Allied’s experienced technical staff. AccuThread™ 856 replaceable thread mills provide quality threads when compared to other thread making processes and allow for easy replacement of cutting edges.
AccuThread™ 856 Bolt-In Style: Rotate
AccuThread Bolt Style Angle Final
AccuThread Bolt Style Side1 Final
AccuThread Bolt Style Side2 Final
AccuThread Bolt Style Explosion Final
AccuThread Bolt Style Close Final
 
 

Advantages

  • Provides a 25-50% increase in tool life over the competition
  • Increased strength and rigidity when cutting forces are applied
  • Holders are engineered to dampen vibration
  • Reduces tooling inventory cost
  • No resharpening required
  • The bolt-in connection allows for small cutter diameters

 

Features

  • Allied's proprietary AM210® coating
  • Stainless steel holders
  • Wide range of forms and pitches
  • Imperial and metric shanks
  • Online programming

 

Recommended Materials

P - steel Steel
S - high temp alloy High Tem Alloy
M - Stainless Steel Sainless Steel
H - Hardened Steel Hardened Steel
K - cast iron Cast Iron
N - Non-ferrous Materials Non-ferrous Materials

 

Recommended Industries

Aerospace Aerospace
Agriculture Agriculture
Automotive Automotive
Renewable Energy Renewable Energy/ Energy
General Production General Production
Oil Gas Oil and Gas
Marine Marine

 

Product Specifications

Product Type Inserted Thread Mill
Thread Form NPT, NPTF, BSPT, BSPP, UN, UNJ, ISO
Shank Options Imperial, Metric
Coating AM210®
Substrate Options Carbide
Coolant Non-coolant
Geometry Options Positive Rake

 

Product Nomenclature

AccuThread™ 856 Indexable Insert Holders

THT
1
-
0400
2
-
1F
3
075
4
M
5
 
 
1. Holder Style

THT = Tapered Head

THN = Straight Head

2. Length of Insert

0400 = 0.400

3. Shank Designation

1F = 1 flute

2F = 2 flutes

3F = 3 flutes

5F = 5 flutes

6F = 6 flutes

7F = 7 flutes

8F = 8 flutes

 

4. Length of Insert

075 = 3/4

100 = 1.00

150 = 1.50

5. Shank Designation

Blank = Inch

M = Metric

 

 

Reference Key
AccuThread856 Bolt In Style dimensions
SymbolAtribute

D1

D2

D3

L1

L6

Maximum cutter diameter

Shank diameter

Pilot diameter

Overall length

Length of insert

 

 

AccuThread™ 856 Indexable Inserts

TN
1
075
2
K
3
-
UN
4
32
5
I
6
 
 
1. Insert Style

TP = Bolt-in

2. Insert Length

075 = 3/4

100 = 1.00

150 = 1.50

3. Coating

K = AM210®

A = TiAlN

U = Uncoated

4. Thread Class

UN = UN

UNJ = UNJ

NPT = NPT

NPTF = NPTF

BSPP = BSPP

BSPT = BSPT

M = ISO

FA = Full ACME

AP = API Round

 

5. Thread Pitch

20 = UN

1.0 = ISO

6. Thread Style

I = Internal

E = External

 

 

Reference Key
SymbolAtribute

L6

T1

Length of insert

Insert thickness

Insert Bolt in style

 

 

Recommended Cutting Data

AccuThread 856 Indexable Neutral Rake

SF Metric Cutting Data

SF Imperial Cutting Data

Metric

Imperial

AccuThread 856 Indexable Positive Rake

SF Metric Cutting Data

SF Imperial Cutting Data

Metric

Imperial

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