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Gun Drill Bushings
Inserts—Type GDI

Acme Gun Drill Inserts are manufactured from thru-hardened tool steel and heat treated to 62-64 RC for longer life. The I.D., O.D., and the face of GDI Bushings are ground concentric and square within .0002" T.I.R.

Inserts are stocked in standard drill sizes only. Special I.D. sizes and special materials (ie. Carbide or Titanium Nitride coating) are available to meet your requirements.



Description

A
I.D. Range
+.0002 / -.0000

B
O.D. Size

C
Length

Nominal

Actual

GDI-13-8

5/64 - #39
(.0781) (.0995)

13/64

.2047
.2044

1/2

GDI-16-8

#38 - 9/64
(.1015) (.1406)

1/4

.2517
.2514

1/2

GDI-20-8

#27 - #10
(.1440) (.1935)

5/16

.3142
.3139

1/2

GDI-32-8

#9 - O
(.1960) (.3160)

1/2

.5018
.5015

1/2

GDI-48-8

P - 17/32
(.3230) (.5312)

3/4

.7519
.7516

1/2

GDI-64-12

35/64 - 3/4
(.5469) (.7500)

1"

1.0019
1.0016

3/4




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