Fullerton Tool Logo

EDP 38221, 3825 AlumaMill 3/8" Square End Mill

Series 3825·EDP 38221
38221End Mill
AlumaMill
In Stock
Michigan21California3
Fast Shipping
Same day on most stocked items
Regrind
Recondition & recoat
Family Owned
Michigan & California
Specifications
Number of Flutes
2
End Type
Square
Length
Long Reach
Cutting Diameter
0.3750
Flute Length
0.6250
Shank Diameter
0.3750
Overall Length
6.0000
Neck Diameter
0.3600
Reach
3.1250
Cutting Type
Center
Recommended for
NHigh-Si AluminumNLow-Si AluminumOPlasticsOWood
Also applicableO Composites
Not suited for Steels · Stainless · Super Alloys · Titanium
UncoatedCoating Profile

Delivers the natural performance of premium carbide without a coating. An excellent choice for a wide range of machining applications where coating benefits are not required, offering reliable performance and sharp cutting edges.

Need a Different Coating?

Don't see the coating you need? We can coat or alter this tool — get instant pricing & lead time.

Quote Alterations

The 3825 AlumaMill is a 2-flute, high-performance end mill designed for high- and low-silicon aluminum, composites, plastics, and wood. Built for aggressive material removal in aluminum and other non-ferrous materials, its highly polished cutting edges help prevent material buildup, while a unique cylindrical margin supports smooth, consistent wall finishes.

84 Years
Third-generation, family-owned
US Headquarters
Saginaw, Michigan
ISO 9001:2015
Certified quality system
Regrind Program
Recondition & recoat service

Size chart · 3825 AlumaMill Square · Long Reach

9 EDPs
DiameterFlute LengthShank DiameterOverall LengthReachNeck DiameterEDP
1/8"1/4"1/8"3"3/4"0.1200"
3/16"5/16"3/16"3"3/4"0.1800"
1/4"1/2"1/4"3"1-1/8"0.2400"
1/4"1/2"1/4"4"2-1/8"0.2400"
3/8"5/8"3/8"4"1-1/8"0.3600"
3/8"5/8"3/8"6"3-1/8"0.3600"
38221
1/2"3/4"1/2"4"2-1/4"0.4800"
1/2"3/4"1/2"6"3-1/2"0.4800"
3/4"1"3/4"6"3-1/8"0.7200"

3/8" 3825 AlumaMill, other ends & lengths

EDPEndLengthFlute lengthOverall lengthRadiusOpen
38605Corner RadiusStandard1"2-1/2"0.0200"
38607Corner RadiusStandard1"2-1/2"0.0450"
38228SquareStub5/8"2-1/2"
38098SquareStandard1"2-1/2"
38220SquareStandard1"2-1/2"
38240SquareExtra-Long2"4"

3/8" in other End Mills

EDPSeriesLengthFlute lengthOverall lengthFlutesOpen
321503200 4-Flute General PurposeStub5/8"2-1/2"4
321823215 2-Flute General PurposeStub5/8"2-1/2"2
381453835 AlumaMillStub5/8"2-1/2"3
270493833 AlumaMill G3Stub1/2"2-1/2"3
341523410 FantomStub1/2"2-1/2"5
345543000 IntimidatorStandard1/2"2-1/2"4

About EDP 38221

Fullerton EDP 38221 is the 3825 AlumaMill 3/8" Square End Mill: length Long Reach, flute length 5/8", shank diameter 3/8", overall length 6", reach 3-1/8", neck diameter 0.3600", cutting type Center, 2 flutes. Made in the USA by Fullerton Tool.

EDP 38221 questions

What are the dimensions of Fullerton EDP 38221?
EDP 38221 has a cutting diameter of 3/8" (0.3750" · 9.53 mm), flute length of 5/8" (0.6250" · 15.88 mm), shank diameter of 3/8" (0.3750" · 9.53 mm), overall length of 6" (6.0000" · 152.4 mm), reach of 3-1/8" (3.1250" · 79.38 mm) and neck diameter of 0.3600" (9.14 mm).
What materials is EDP 38221 rated for?
The 3825 AlumaMill is rated for High Si Aluminum > 10% and Composites.
Where can I check stock and price for EDP 38221?
Live stock by warehouse, lead time and your account's price for EDP 38221 are in Fullerton's tool search at fullertontool.com/search. Signed-in customers can order from there.
What materials is the 3825 AlumaMill designed for?
It's designed for Composites, High Si Aluminum > 10%, Low Si Aluminum < 10%, Plastics, and Wood.
What coating does the 3825 AlumaMill come with?
It's stocked Uncoated and with FC19 coating. Our FC19 coating is engineered for smooth, frictionless chip evacuation. Outstanding self-lubricating properties make it ideal for aluminum containing less than 10% silicon and titanium alloys.
What end styles are available for the 3825 AlumaMill?
It's available in Ball, Corner Radius, Square.
How many flutes does the 3825 AlumaMill have?
The 3825 AlumaMill is a 2-flute tool.
What's the helix angle on the 3825 AlumaMill?
The 3825 AlumaMill has a helix angle of 45.00°.
What tolerances does the 3825 AlumaMill hold?
The 3825 AlumaMill holds a shank tolerance of h6 and a cutter tolerance of +.0000"/-.0005" | +0.000mm/-0.013mm.