AccuThread® 856 Pin Style    360 Icon
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.
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 pin style connection improves repeatability when changing inserts
Features
  • Allied's proprietary AM210® coating
  • Stainless steel holders
  • Wide range of forms and pitches
  • Imperial and metric shanks
  • Offered in neutral and positive rake geometries
  • Online programming
Recommended Materials  
Materials
x
Key Icon Steel
Material Key Icon High Temp Alloy
Key Icon Stainless Steel
Material Key Icon Hardened Steel
Key Icon Cast Iron
Material Key Icon Non-Ferrous
KeyIcon Reference

Material Key Icon
Material Key Icon
Material Key Icon
Material Key Icon
Material Key Icon
Material Key Icon



Recommended Industries  
Industries
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Key Icon Medical
Industry Key Icon Renewable Energy/ Energy
Key Icon Automotive
Industry Key Icon Aerospace
Key Icon Firearms
Industry Key Icon Agriculture
Key Icon Oil and Gas
Industry Key Icon Marine
Key Icon General Production
Industry Key Icon Heavy Equipment
Key Icon Hydraulics
Industry Key Icon Tool, Mold, and Die
Key Icon Structural Steel Fabricator
Key Icon Reference
Industry
Industry
Industry
Industry
Industry
Industry
Industry



Technical Information

Product Specifications
Product Type
Inserted Thread Mill
Thread Form
NPT, NPTF, BSPT, BSPP, API, ACME, UN, UNJ, ISO
Shank Options
Flanged, Shell Mill
Coating
AM210®
Substrate Options
Carbide
Coolant
Coolant and Noncoolant
Geometry Options
Positive Rake, Neutral Rake

Product Nomenclature
AccuThread® 856 Indexable Insert Holders
Holder Style
x
THP = Weldon Positive Rake
TNR = Weldon Neutral Rake
TSN = Shelll Mill Positive Rake
TSR = Shell Mill Neutral Rake
THP
-
Length of Insert
x
0400 = 0.400
0400
-
Shank Designation
x
1F = 1 flute
2F = 2 flutes
3F = 3 flutes
5F = 5 flutes
 
6F = 6 flutes
7F = 7 flutes
8F = 8 flutes
1F
Length of Insert
x
075 = 3/4
100 = 1.00
150 = 1.50
075
Shank Designation
x
Blank = Inch
M = Metric
M
AccuThread® 856 Indexable Inserts
Insert Style
x
TN = Pin style
TN
Insert Length
x
075 = 3/4
100 = 1.00
150 = 1.50
 
075
Coating
x
K = AM210®
A = TiAIN
U = Uncoated
K
-
Thread Class
x
UN = UN
UNJ = UNJ
NPT = NPT
NPTF = NPTF
BSPP = BSPP

 
BSPT = BSTP
M = ISO
FA = Full ACME
AP = API Round
 
UN
Thread Pitch
x
20 = UN
1.0 = ISO
 
32
Thread Style
x
I = Internal
E = External
I
Solid Carbide/Indexable Solutions
Literature Thumbnail

Available Online Only

Recommended Cutting Data
AccuThread 856 Indexable Neutral Rake
AccuThread 856 Indexable Positive Rake

Additional Resources and Guidelines