Midget Mills® - Ground Rotary Files & Burs

The Original Ground Rotary File

Invented by Rollin M. Severance in 1931, Midget Mills revolutionized precision deburring and finishing operations.

Severance Midget Mills are precision ground rotary files designed for deburring, finishing, and shaping operations. Unlike stamped or milled burs, each Midget Mill is individually ground to exacting tolerances, ensuring consistent performance and extended tool life.

"We are the originators; we have been copied but not surpassed."

Ordering Tip

All tools are ordered by their EDP Number (Electronic Data Processing). Find your tool in the tables below and use the EDP number when placing orders.

Download Full Catalog (PDF)

Key Features

Precision ground flutes
Available in 24 shapes (A-Z, FL)
HSS and Carbide options
1/4" standard shank
Resharpenable
Made in USA

Midget Mills® Identification System

Midget Mills are identified by a three-letter "tool number" that describes the tool's diameter, length, and shape.

First Letter - Diameter

A - 1/8"
B - 3/16"
C - 1/4"
D - 5/16"
E - 3/8"
F - 7/16"
G - 1/2"
H - 9/16"
I - 5/8"
J - 3/4"
K - 7/8"
L - 1"

Second Letter - Length

A - 1/8"
C - 1/4"
E - 3/8"
G - 1/2"
I - 5/8"
J - 3/4"
L - 1"
N - 1-1/4"
P - 1-1/2"
R - 1-3/4"
S - 2"
X - 4"

Third Letter - Shape

A - Cylindrical Square End
B - Ball
C - Cylindrical Rounded
D - Cylindrical w/Radius
E-M - Tapered (various angles)
N - Inverted Cone
P - Pear
Q - Olive
R - Tree (Radius Nose)
S - Tree (Small Radius)
T - Tree (Pointed)
U - Concave
V - Convex
W - Radius End Only
X - Double Angle
BI - Bi-Convex
FL - Flame

Example: CJA-EC-W

C = 1/4" diameter | J = 3/4" flute length | A = Cylindrical Square End | EC = End Cutting | W = Carbide (Tungsten)

Material Types

H.S.S. Midget Mills

Premium M2 High-Speed Steel hardened to Rockwell 63-65. Ideal for general-purpose deburring on steel, aluminum, brass, and plastics.

Standard cut patterns available

Carbide Midget Mills

Custom tungsten-cobalt carbide blend for extended tool life. Excellent for hardened steels, cast iron, and abrasive materials.

10-20x longer life than HSS

Carbo-Mills

Double-cut carbide burs with aggressive cutting action. Designed for rapid stock removal on all materials.

Cross-cut flute pattern

Sever-Cuts

Super coarse cut pattern specifically designed for aluminum and soft non-ferrous metals. Prevents loading and galling.

For aluminum & soft metals

Shape A - Cylindrical Square End

Cylindrical shape with flat end. The most versatile shape for general deburring, side cutting, and surface finishing. Ideal for flat surfaces, slots, and keyways.

HSS Standard Cut

Head Dia.	Flute Length	Tool Name	HSS EDP
1/8"	1/2"	AGA	22930
1/8"	3/4"	AJA	22931
1/8"	1"	ALA	22932
1/8"	1-1/4"	ANA	22933
1/8"	1-1/2"	APA	22934
3/16"	1/2"	BGA	22935
3/16"	3/4"	BJA	22936
3/16"	1"	BLA	22937
1/4"	1/2"	CGA	22938
1/4"	1"	CLA	22939
1/4"	1-1/2"	CPA	22940
1/4"	1-3/4"	CRA	22941
5/16"	1"	DLA	22942
3/8"	3/4"	EJA	22943
3/8"	1"	ELA	22944
3/8"	1-1/2"	EPA	22945
3/8"	2"	ESA	22946
7/16"	1"	FLA	22947
1/2"	1/2"	GGA	22948
1/2"	1"	GLA	22949
1/2"	1-1/4"	GNA	22950
1/2"	1-1/2"	GPA	22951
1/2"	2"	GSA	22952
5/8"	1"	ILA	22953
3/4"	1/2"	JGA	22954
3/4"	3/4"	JJA	22955
3/4"	1"	JLA	22956
3/4"	1-1/4"	JNA	22957
1"	1/4"	LCA	22958
1"	1"	LLA	22959

HSS End Cutting (-EC)

Same head diameters as standard tools. End cut (-EC) for plunge cutting capability.

Tool Name	HSS EDP
AGA-EC	22960
AJA-EC	22961
ALA-EC	22962
ANA-EC	22963
APA-EC	22964
BGA-EC	22965
BJA-EC	22966
BLA-EC	22967
CGA-EC	22968
CLA-EC	22969
CPA-EC	22970
CRA-EC	22971
DLA-EC	22972
EJA-EC	22973
ELA-EC	22974
EPA-EC	22975
ESA-EC	22976
FLA-EC	22977
GGA-EC	22978
GLA-EC	22979
GNA-EC	22980
GPA-EC	22981
GSA-EC	22982
ILA-EC	22983
JGA-EC	22984
JJA-EC	22985
JLA-EC	22986
JNA-EC	22987
LCA-EC	22988
LLA-EC	22989

Carbide Standard Cut (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/8"	1/2"	AGA-W	23280
1/8"	5/8"	AIA-W	23281
3/16"	1/2"	BGA-W	23282
3/16"	5/8"	BIA-W	23283
1/4"	1/2"	CGA-W	23284
1/4"	5/8"	CIA-W	23285
1/4"	3/4"	CJA-W	23286
1/4"	1"	CLA-W	23287
5/16"	3/4"	DJA-W	23288
5/16"	1"	DLA-W	23289
3/8"	3/4"	EJA-W	23290
3/8"	1"	ELA-W	23291
3/8"	1-1/2"	EPA-W	23292
7/16"	1"	FLA-W	23293
1/2"	1"	GLA-W	23294
5/8"	1"	ILA-W	23295
3/4"	1/2"	JGA-W	23296
3/4"	3/4"	JJA-W	23297
3/4"	1"	JLA-W	23298
1"	1"	LLA-W	23299

Carbide End Cutting (-EC-W)

Same head diameters as standard tools. End cut (-EC) for plunge cutting capability. W = Carbide.

Tool Name	Carbide EDP
AGA-EC-W	23300
AIA-EC-W	23301
BGA-EC-W	23302
BIA-EC-W	23303
CGA-EC-W	23304
CIA-EC-W	23305
CJA-EC-W	23306
CLA-EC-W	23307
DJA-EC-W	23308
DLA-EC-W	23309
EJA-EC-W	23310
ELA-EC-W	23311
EPA-EC-W	23312
FLA-EC-W	23313
GLA-EC-W	23314
ILA-EC-W	23315
JGA-EC-W	23316
JJA-EC-W	23317
JLA-EC-W	23318
LLA-EC-W	23319

EC = End Cut (plunge cutting capability) | W = Carbide (Tungsten Carbide)

Shape B - Ball

Spherical head for deburring holes, contoured surfaces, and concave shapes. The ball diameter equals the head diameter.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/8"	1/8"	AAB	22990
3/16"	3/16"	BBB	22991
1/4"	1/4"	CCB	22992
5/16"	5/16"	DDB	22993
3/8"	3/8"	EEB	22994
7/16"	7/16"	FFB	22995
1/2"	1/2"	GGB	22996
9/16"	9/16"	HHB	22997
5/8"	5/8"	IIB	22998
3/4"	3/4"	JJB	22999
7/8"	7/8"	KKB	23000
1"	1"	LLB	23001
1-1/4"	1-1/4"	NNB	23002

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/8"	1/8"	AAB-W	23320
3/16"	3/16"	BBB-W	23321
1/4"	1/4"	CCB-W	23322
5/16"	5/16"	DDB-W	23323
3/8"	3/8"	EEB-W	23324
7/16"	7/16"	FFB-W	23325
1/2"	1/2"	GGB-W	23326
5/8"	5/8"	IIB-W	23327
3/4"	3/4"	JJB-W	23328
1"	1"	LLB-W	23329

Shape C - Cylindrical Radius End

Cylindrical shape with a radius on the end. Combines side cutting ability with smooth radius transitions. For filleting, channeling, and creating radii.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/8"	1/2"	AGC	23003
3/16"	1/2"	BGC	23004
1/4"	1"	CLC	23005
1/4"	1-1/2"	CPC	23006
1/4"	2-1/2"	CUC	23007
5/16"	1"	DLC	23008
3/8"	1"	ELC	23009
3/8"	1-1/2"	EPC	23010
7/16"	1"	FLC	23011
1/2"	1"	GLC	23012
1/2"	1-1/2"	GPC	23013
5/8"	1"	ILC	23014
3/4"	1"	JLC	23015
3/4"	1-1/4"	JNC	23016
3/4"	1-1/2"	JPC	23017
1"	1-3/8"	LOC	23018

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/8"	1/2"	AGC-W	23330
1/8"	5/8"	AIC-W	23331
3/16"	5/8"	BIC-W	23332
1/4"	1/2"	CGC-W	23333
1/4"	5/8"	CIC-W	23334
1/4"	1"	CLC-W	23335
5/16"	3/4"	DJC-W	23336
5/16"	1"	DLC-W	23337
3/8"	3/4"	EJC-W	23338
3/8"	1"	ELC-W	23339
3/8"	1-1/2"	EPC-W	23340
7/16"	1"	FLC-W	23341
1/2"	1"	GLC-W	23342
5/8"	1"	ILC-W	23343
3/4"	1"	JLC-W	23344

Shape D - Radius Ball

Ball shape with specified radii. Used for precision radius work and creating specific radii in workpieces.

Head Dia.	Flute Length	Radius	Tool Name	HSS EDP
1/2"	1/2"	1/32"	GGD-1/32R	23019
1/2"	1/2"	1/16"	GGD-1/16R	23020
1/2"	1/2"	3/32"	GGD-3/32R	23021
1/2"	1/2"	1/8"	GGD-1/8R	23022
3/4"	3/4"	1/16"	JJD-1/16R	23023
3/4"	3/4"	1/8"	JJD-1/8R	23024
3/4"	3/4"	3/16"	JJD-3/16R	23025
3/4"	3/4"	1/4"	JJD-1/4R	23026

Shape E - Oval / Egg

Egg-shaped head for blending contours and deburring elliptical openings. Provides smooth transitions between surfaces.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/8"	3/16"	ABE	23080
3/16"	3/16"	BBE	23081
1/4"	5/16"	CDE	23082
3/8"	1/2"	EGE	23083
1/2"	3/8"	GEE	23084
1/2"	1/2"	GGE	23085
3/4"	3/4"	JJE	23086

Shape F - Tree Pointed

Tree shape with a pointed tip. For deburring in hard-to-reach areas, tapered holes, and angled surfaces.

Head Dia.	Flute Length	Tool Name	HSS EDP
5/16"	3/8"	DEF	23087
3/8"	3/8"	EEF	23088
3/8"	9/16"	EHF	23089
1/2"	7/16"	GFF	23090
1/2"	5/8"	GIF	23091
5/8"	3/4"	IJF	23092
5/8"	7/8"	IKF	23093
3/4"	7/8"	JKF	23094
3/4"	1"	JLF	23095
1"	1"	LLF	23096
1"	1-3/8"	LOF	23097

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
5/8"	7/8"	IKF-W	23410

Shape G - Tree Rounded

Tree shape with a rounded tip. Combines taper access with smooth finishing. For die work, mold finishing, and contoured surfaces.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/8"	3/16"	ABG	23098
5/16"	3/8"	DEG	23099
3/8"	7/16"	EFG	23100
3/8"	5/8"	EIG	23101
1/2"	1/2"	GGG	23102
5/8"	3/4"	IJG	23103
3/4"	3/4"	JJG	23104

Shape H - Flame

Flame-shaped head for accessing tight areas and contoured surfaces. Excellent for blending and finishing operations.

Head Dia.	Flute Length	Tool Name	HSS EDP
3/16"	5/16"	BDH	23105
5/16"	5/8"	DIH	23106
1/4"	1/2"	CGH	23107
3/8"	1/2"	EGH	23108
3/8"	3/4"	EJH	23109
1/2"	9/16"	GHH	23110
1/2"	7/8"	GKH	23111
5/8"	3/4"	IJH	23112

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/4"	3/8"	CEH-W	23400
3/8"	3/4"	EJH-W	23407
1/2"	7/8"	GKH-W	23408

Shape I - Inverted Cone

Inverted cone shape for undercuts, back chamfering, and deburring the back side of holes.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/4"	5/16"	CDI	23113
3/8"	1/2"	EGI	23114
3/8"	5/8"	EII	23115
1/2"	5/8"	GII	23116
1/2"	1"	GLI	23117
5/8"	3/4"	IJI	23118
3/4"	9/16"	JHI	23119

Shape J - 60-Degree Cone

60-degree included angle cone for chamfering, countersinking, and deburring holes. Cone angle is 60 degrees included.

Head Dia.	Flute Length	Tool Name	HSS EDP
3/16"	3/8"	BEJ	23120
1/4"	5/16"	CDJ	23121
1/4"	1/2"	CGJ	23122
5/16"	3/4"	DJJ	23123
3/8"	1/2"	EGJ	23124
3/4"	5/8"	JIJ	23125
3/4"	1"	JLJ	23126
1"	2-1/2"	LUJ	23127
1"	3/4"	LJJ	23128

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/4"	1/2"	CGJ-W	23401

Shape K - 90-Degree Cone

90-degree included angle cone for chamfering and countersinking. Standard 90-degree angle matches common chamfer requirements.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/8"	3/8"	AEK	23129
1/4"	3/8"	CEK	23130
1/4"	3/4"	CJK	23131
1/4"	5/8"	CIK	23132
5/16"	3/4"	DJK	23133
3/8"	1"	ELK	23134
1/2"	1-1/4"	GNK	23135

Shape L - Rounded Cone

Cone shape with rounded tip for smooth finishing of tapered holes, die work, and blending operations.

Head Dia.	Flute Length	Tool Name	HSS EDP
3/16"	5/8"	BIL	23136
1/4"	3/4"	CJL	23137
5/16"	3/4"	DJL	23138
3/8"	1"	ELL	23139
1/2"	1-1/4"	GNL	23140
5/8"	3/4"	IJL	23141
5/8"	7/8"	IKL	23142

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/4"	3/4"	CJL-W	23402
5/16"	7/8"	DKL-W	23405
3/8"	1"	ELL-W	23406
1/2"	1-1/4"	GNL-W	23409

Shape M - Pointed Cone

Cone shape with a sharp pointed tip. For reaching into V-grooves, sharp corners, and detailed finishing work.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/8"	1/2"	AGM	23143
3/16"	3/4"	BJM	23144
1/4"	7/8"	CKM	23145
1/4"	1-1/4"	CNM	23146
3/8"	1"	ELM	23147
3/8"	1-3/4"	ERM	23148
1/2"	3/4"	GJM	23149
1/2"	1"	GLM	23150
1/2"	1-1/4"	GNM	23151

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/4"	7/8"	CKM-W	23403
1/4"	1-1/4"	CNM-W	23404

Shape N - Inverted Taper (Radius End)

Inverted cone shape with 5° to 18° C/L angle. For undercuts, back chamfering, and deburring back side of holes. Most commonly used without optional end cut.

HSS Standard

Head Dia.	Flute Length	Included Angle	Tool Name	HSS EDP
1/4"	1/8"	36°	CAN	23152
1/4"	3/16"	28°	CBN	23153
1/4"	1/4"	20°	CCN	23154
1/4"	3/8"	14°	CEN	23155
1/4"	1/2"	10°	CGN	23156
3/8"	3/16"	36°	EBN	23157
3/8"	1/4"	28°	ECN	23158
3/8"	5/16"	20°	EDN	23159
3/8"	1/2"	10°	EGN	23160
1/2"	3/8"	20°	GEN	23161
1/2"	1/2"	14°	GGN	23162
1/2"	1"	14°	GLN	23163
1/2"	1-1/8"	10°	GMN	23164
5/8"	3/8"	36°	IEN	23165
5/8"	1/2"	28°	IGN	23166
3/4"	1/2"	36°	JGN	23167
3/4"	5/8"	36°	JIN	23168

HSS End-Cutting (-EC)

Same dimensions as standard tools above. End-cutting version adds cutting teeth on the end face.

Tool Name	HSS EDP
CAN-EC	23169
CBN-EC	23170
CCN-EC	23171
CEN-EC	23172
CGN-EC	23173
EBN-EC	23174
ECN-EC	23175
EDN-EC	23176
EGN-EC	23177
GEN-EC	23178
GGN-EC	23179
GLN-EC	23180
GMN-EC	23181
IEN-EC	23182
IGN-EC	23183
JGN-EC	23184
JIN-EC	23185

Carbide Versions

Standard Tool	Carbide EDP	End-Cutting Tool	Carbide-EC EDP
CEN-W	23411	CEN-W-EC	23416
EDN-W	23412	EDN-W-EC	23417
GGN-W	23413	GGN-W-EC	23418
IEN-W	23414	IEN-W-EC	23419
JGN-W	23415	JGN-W-EC	23420

Shape P - Pear (Bud)

Pear or bud shaped head for blend work and contoured surfaces requiring smooth transitions.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/4"	5/16"	CDP	23027
5/16"	3/8"	DEP	23028
3/8"	7/16"	EFP	23029
1/2"	5/8"	GIP	23030
5/8"	1"	ILP	23031

Shape Q - Inverted Cone Tapered

Inverted cone with taper for deburring cross-drilled holes, intersecting bores, and undercuts. Versatile deburring shape.

Head Dia.	Flute Length	Tool Name	HSS EDP
3/16"	5/16"	BDQ	23032
1/4"	7/16"	CFQ	23033
5/16"	1/2"	DGQ	23034
3/8"	5/8"	EIQ	23035
3/8"	3/4"	EJQ	23036
1/2"	7/8"	GKQ	23037
5/8"	1"	ILQ	23038
3/4"	1"	JLQ	23039
1"	1-3/8"	LOQ	23040

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
3/16"	5/16"	BDQ-W	23372
1/4"	3/8"	CEQ-W	23373
3/8"	5/8"	EIQ-W	23374
1/2"	7/8"	GKQ-W	23375
5/8"	1"	ILQ-W	23376
3/4"	1"	JLQ-W	23377

Shape R - Cylindrical Round Nose

Cylindrical shape with a rounded nose end. Combines the side cutting of Shape A with the smooth radius nose of Shape C. Versatile for general deburring.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/8"	7/16"	AFR	23041
3/16"	5/16"	BDR	23042
3/16"	1/2"	BGR	23043
1/4"	3/8"	CER	23044
1/4"	3/4"	CJR	23045
1/4"	1"	CLR	23046
3/8"	7/16"	EFR	23047
3/8"	3/4"	EJR	23048
3/8"	1"	ELR	23049
1/2"	1"	GLR	23050
1/2"	1-1/8"	GMR	23051
5/8"	5/8"	IIR	23052
5/8"	1-1/8"	IMR	23053
3/4"	3/4"	JJR	23054
3/4"	1"	JLR	23055
3/4"	1-1/4"	JNR	23056
3/4"	1-3/8"	JOR	23057
1-1/8"	1-3/4"	MRR	23058
1-1/4"	2"	NSR	23059
1/2"	3/4"	GJR	23078

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/8"	7/16"	AFR-W	23345
1/4"	1/2"	CGR-W	23346
1/4"	5/8"	CIR-W	23347
1/4"	3/4"	CJR-W	23348
3/8"	3/4"	EJR-W	23349
7/16"	1"	FLR-W	23350
1/2"	3/4"	GJR-W	23351
1/2"	1"	GLR-W	23352
5/8"	1"	ILR-W	23353
3/4"	1"	JLR-W	23354
3/4"	1-1/4"	JNR-W	23355
3/4"	1-1/2"	JPR-W	23356

Shape S - Cylindrical Pointed End

Cylindrical shape with a pointed conical end. For deburring in tight corners and reaching into V-shaped grooves.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/8"	3/8"	AES	23060
3/16"	1/2"	BGS	23061
1/4"	3/4"	CJS	23062
3/8"	3/4"	EJS	23063
1/2"	1"	GLS	23064
5/8"	1-1/8"	IMS	23065
3/4"	1-1/4"	JNS	23066
1"	1-5/8"	LQS	23067
1-1/4"	2"	NSS	23068

Shape T - Tree Flat Top

Tree shape with a flat top surface. Combines tapered body for access with flat end for finishing.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/4"	1/2"	CGT	23069
1/4"	3/4"	CJT	23070
3/8"	5/8"	EIT	23071
3/8"	3/4"	EJT	23072
1/2"	3/4"	GJT	23073
1/2"	1"	GLT	23074
1/2"	1-1/8"	GMT	23075
5/8"	1"	ILT	23076
3/4"	1"	JLT	23077

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/4"	1/2"	CGT-W	23357
1/4"	5/8"	CIT-W	23358
1/4"	3/4"	CJT-W	23359
5/16"	3/4"	DJT-W	23360
3/8"	3/4"	EJT-W	23361
1/2"	3/4"	GJT-W	23362
1/2"	1"	GLT-W	23363
5/8"	1"	ILT-W	23364
3/4"	1"	JLT-W	23365
3/4"	1-1/2"	JPT-W	23366

Shape U - Concave Radius

Concave (undercut) shape for deburring and finishing inside radii. Generates a radius on the outside edge of the workpiece.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/4"	1/8"	CAU	23186
1/4"	3/16"	CBU	23187
1/4"	1/4"	CCU	23188
5/16"	3/16"	DBU	23189
3/8"	1/8"	EAU	23190
3/8"	3/16"	EBU	23191
3/8"	1/4"	ECU	23192
3/8"	5/16"	EDU	23193
7/16"	1/4"	FCU	23194
1/2"	1/4"	GCU	23195
1/2"	5/16"	GDU	23196
1/2"	3/8"	GEU	23197
1/2"	7/16"	GFU	23198
5/8"	1/2"	IGU	23199
3/4"	3/8"	JEU	23200
3/4"	7/16"	JFU	23201
3/4"	1/2"	JGU	23202
3/4"	5/8"	JIU	23203
7/8"	5/8"	KIU	23204
7/8"	3/4"	KJU	23205

Carbide Versions (-W)

Head Dia.	Flute Length	Tool Name	Carbide EDP
1/2"	1/4"	GCU-W	23421
1/2"	5/16"	GDU-W	23422
1/2"	3/8"	GEU-W	23423
1/2"	7/16"	GFU-W	23424

Shape V - Convex Radius

Convex shape for deburring and finishing outside radii. Generates a radius on the inside edge of the workpiece.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/4"	3/8"	CEV	23206
5/8"	7/16"	IFV	23207
3/4"	1/2"	JGV	23208
1"	3/16"	LBV	23209
1-1/4"	7/8"	NKV	23210

Shape W - Cone Flat End

Cone shape with flat end for counterboring, spot facing, and deburring operations requiring a flat bottom surface.

Head Dia.	Flute Length	Tool Name	HSS EDP
1/4"	1/8"	CAW	23211
5/16"	1/4"	DCW	23212
3/8"	1/4"	ECW	23213
1/2"	3/8"	GEW	23214
7/8"	1/2"	KGW	23215
1"	1/2"	LGW	23216

Shape X - Double Angle

Convex shape mills combining forward and reverse angles. Forward angle is given first, followed by reverse angle. Angles are given with centerline. Special angles available at nominal extra charge.

Head Dia.	Head Length	Angle A	Angle B	Tool Name	HSS EDP
1/4"	3/8"	80°	10°	CEX	23217
5/8"	5/8"	40°	20°	IIX	23218
3/4"	1/2"	120°	60°	JGX	23219
1"	3/4"	90°	30°	LJX	23220
1/4"	1/4"	20°	20°	CCX	23221
5/16"	1/4"	30°	30°	DCX	23222
3/8"	1/4"	60°	60°	ECX	23223
1/2"	1/4"	50°	50°	GCX	23224
5/8"	1/4"	60°	60°	ICX	23225
1"	1/4"	90°	90°	LCX	23226
1-1/2"	1/4"	60°	60°	PCX-30	23227
1-1/2"	1/4"	90°	90°	PCX-45	23228
1-1/2"	1/4"	120°	120°	PCX-60	23229

Shape BI - Bi-Convex

Convex shape mills with cutting teeth on the radius only. Different from Shape X which has dual angles - Shape BI provides smooth convex cutting action for blending and finishing operations.

Head Dia.	Head Length	Tool Name	HSS EDP
3/16"	5/16"	BIRU	23230
1/4"	3/8"	CJCU	23231
1/4"	5/8"	CLRU	23232
1/4"	3/4"	CLTU	23233
5/16"	5/8"	DMRU	23234
3/8"	1/2"	ELCU	23235
3/8"	3/4"	ELTU	23236
1/2"	1/2"	GKCU	23237

Shape FL - Flame

A very handy shape for blending operations. The flame shape provides excellent access to contoured surfaces and tight radii.

Head Dia.	Flute Length	Tool Name	Carbide EDP	Carbo-Mill EDP
1/4"	5/8"	CIFL-W	23367	22415
5/16"	3/4"	DJFL-W	23368	22569
1/2"	1-1/4"	GNFL-W	23369	22570
5/8"	1-7/16"	IOFL-W	23370	22571
3/4"	1-5/8"	JQFL-W	23371	22572

Long Shank Midget Mills

Extended reach tools for deep cavity and hard-to-access deburring operations.

Long Shank Midget Mills feature special flute geometry optimized for extended reach applications. All tools have 1/4" shank diameter and 8" shank length. Other shank lengths available upon request.

Shape	Head Dia.	Flute Length	HSS Tool	HSS EDP	Carbide Tool	Carbide EDP
A - Cylindrical, Plain Nose	1/4"	1"	CLAx8	23730	CLA-Wx8	23780
	3/8"	1"	ELAx8	23731	ELA-Wx8	23781
	1/2"	1"	GLAx8	23732	GLA-Wx8	23782
A-EC - Cylindrical, End Cutting	1/4"	1"	CLA-ECx8	23733	CLA-EC-Wx8	23783
	3/8"	1"	ELA-ECx8	23734	ELA-EC-Wx8	23784
	1/2"	1"	GLA-ECx8	23735	GLA-EC-Wx8	23785
B - Ball	1/4"	3/16"	CCBx8	23736	CCB-Wx8	23786
	3/8"	5/16"	EEBx8	23737	EEB-Wx8	23787
	1/2"	7/16"	GGBx8	23738	GGB-Wx8	23788
C - Cylindrical, Ball Nose	1/4"	1"	CLCx8	23739	CLC-Wx8	23789
	3/8"	1"	ELCx8	23740	ELC-Wx8	23790
	1/2"	1"	GLCx8	23741	GLC-Wx8	23791
R - Tree, Radius Nose	1/4"	3/4"	CJRx8	23742	CJR-Wx8	23792
	3/8"	3/4"	EJRx8	23743	EJR-Wx8	23793
	1/2"	1"	GLRx8	23744	GLR-Wx8	23794
T - Tree, Pointed Nose	1/4"	3/4"	CJTx8	23745	CJT-Wx8	23795
	3/8"	3/4"	EJTx8	23746	EJT-Wx8	23796
	1/2"	1-1/8"	GMTx8	23747	—	—
	1/2"	1"	—	—	GLT-Wx8	23797
FL - Flame	5/16"	3/4"	DJFLx8	23748	DJFL-Wx8	23798
	1/2"	1-1/4"	GNFLx8	23749	GNFL-Wx8	23799
Q - Olive	1/4"	7/16"	CFQx8	23750	CFQ-Wx8	23800
	3/8"	5/8"	EIQx8	23751	EIQ-Wx8	23801
	1/2"	7/8"	GKQx8	23752	GKQ-Wx8	23802
H - Flame (Tapered)	1/4"	1/2"	CGHx8	23753	CGH-Wx8	23803
	1/2"	1"	GLHx8	23756	GLH-Wx8	23806
J - 60° Cone	5/16"	3/4"	DJJx8	23754	DJJ-Wx8	23804
L - Inverted Cone	3/8"	1"	ELLx8	23755	ELL-Wx8	23805

Custom shank lengths available. Contact us for specific shape availability and custom configurations.

Pitch/Cut Number Reference

Midget Mills are available in various cut patterns (pitch). The standard cut is optimized for general use. Fine cuts provide smoother finishes; coarse cuts offer faster stock removal.

Cut Number	Description	Application
Standard	Medium pitch, right-hand spiral	General purpose deburring on steel, stainless, brass
Fine	Closer pitch spacing	Finishing work, smooth surface requirements
Coarse	Wider pitch spacing	Rapid stock removal, soft materials
Sever-Cut	Super coarse, wide chip clearance	Aluminum, zinc, copper, soft non-ferrous metals
Double Cut	Cross-hatch pattern (Carbo-Mills)	Aggressive cutting, all materials

Ordering Special Cuts

To order non-standard cuts, add the suffix to the tool name:

-F for Fine cut
-C for Coarse cut
-SC for Sever-Cut

Cut Numbers by Tool Diameter

Standard pitch will always be supplied unless otherwise specified. If an unlisted pitch is required, order by cut number.

Diameter	Fine	Standard	Coarse	Super Coarse*
3/32"	2	3	5	—
1/8"	3	4	5	—
3/16"	3	5	6	—
1/4"	4	5	7	4
5/16"	4	6	7	—
3/8"	4	6	8	6
7/16"	5	6	8	—
1/2"	5	7	9	8
9/16"	5	7	9	—
5/8"	5	7	9	10
3/4"	6	8	10	12
7/8"	6	8	10	—
1"	6	8	10	16
1-1/8"	6	9	11	—
1-1/4"	6	9	11	—
1-1/2"	7	9	12	—

*Super Coarse cuts are recommended for aluminum and other nonferrous materials for heavy, fast stock removal.

Technical Data & Speed/Feed Recommendations

The following guidelines will help you achieve optimal performance from your Midget Mills. Actual speeds and feeds may vary based on material hardness, machine rigidity, and specific application requirements.

HSS Midget Mills (M2 Steel)

Material	SFM	Feed/Tooth
Aluminum	300-500	.002-.004"
Brass/Bronze	200-300	.001-.003"
Mild Steel	80-120	.001-.002"
Stainless Steel	40-80	.0005-.001"
Cast Iron	60-100	.001-.002"

Carbide Midget Mills

Material	SFM	Feed/Tooth
Aluminum	500-1000	.002-.005"
Brass/Bronze	300-500	.001-.003"
Mild Steel	200-400	.001-.002"
Stainless Steel	100-200	.0005-.001"
Hardened Steel (40-50 HRC)	50-100	.0003-.0005"

Coolant

Use flood coolant or mist for best results. Air blast acceptable for aluminum and non-ferrous materials.

Rotation

Clockwise rotation (conventional). Use die grinders, flexible shafts, or CNC machines rated for the required RPM.

Cut Selection

Coarse cuts (8-10 pitch) for soft materials. Fine cuts (14-16 pitch) for finishing and hard materials.

Safety

Always wear safety glasses. Secure workpiece firmly. Never exceed maximum RPM for tool diameter.

Related Products

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Lab Mills®

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Regrind Service

Save up to 70% by resharpening your Midget Mills. We restore them to factory specs.

Learn More

Need Help Selecting the Right Midget Mill?

Our application engineers can help you choose the optimal shape, material, and cut for your specific operation.

Contact Us 989-777-5500