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Compac IA2A
dial bore gage parts list

 

Model IA2A (.8 to 2.0") and model IA2 (20 to 50 mm) measuring heads.

 

These are the same parts used by Interapid, Alina and SPI 20-017-0 and 20-016-2 dial bore gages made in Switzerland.

How to order parts: newarrow44take note of the part numbers and quantities you need, then proceed to the parts price list to place your order online.

Indicator parts are listed separately. All parts are made in Switzerland unless otherwise noted. Information on complete Compac, Interapid, SPI and Alina bore gage sets can be found at page 39. For information on Compac bore gage repair service, see page 30.

Dwg

SPI no.

Part no.

20-017-0

.8-2.0" measuring head with box and all plugs (see page 39)

IA2A

20-50 mm measuring head with box and plugs

IA2

20-042-8

.0001" dial indicator for bore gage (see page 39)

IAP555A

0

04-868-6

wooden box for .8-2.0”

042388newarrow44a

1

04-774-6

measuring head assembled

044100newarrow44b

4

04-777-9

vertical rack

041868newarrow44c

5

04-778-7

flat contact

042139newarrow44d

6

04-744-9

guide ø1,95

042035newarrow44e

7

04-779-5

centering washer

041869newarrow44f

8

04-780-3

spring

041870newarrow44g

9

04-781-1

bushing

044102newarrow44h

10

04-782-9

bushing

044103newarrow44i

11

04-783-7

screw for cover

041977newarrow44j

12

04-784-5

brass bushing

042034newarrow44k

13

04-785-2

pinion

042041newarrow44l

14

04-786-0

horizontal rack

044104newarrow44m

16

04-787-8

conical pin

042011newarrow44n

17

04-788-6

blue plate

042059newarrow44o

18

04-789-4

threaded bushing

041872newarrow44p

19

metric

contact #1 (1,5 mm) for metric models

044105newarrow44q

19

metric

contact #2 (2,5 mm) for metric models

044106newarrow44r

19

metric

contact #3 (3,5 mm) for metric models

044107newarrow44s

19

metric

contact #4 (4,5 mm) for metric models

044108newarrow44t

19

metric

contact #5 (5,5 mm) for metric models

044109newarrow44u

19

metric

contact #6 (6,5 mm) for metric models

044110newarrow44v

19

04-790-2

contact #1 (.80")

044111newarrow44w

19

04-791-0

contact #2 (.84")

044112newarrow44x

19

04-792-8

contact #3 (.88")

044113newarrow44y

19

04-793-6

contact #4 (.92")

044114newarrow44z

19

04-794-4

contact #5 (.96")

044115newarrow4427

19

04-795-1

contact #6 (1.00")

044116newarrow4428

22

04-796-9

extension A (.20")

041876newarrow4429

22

04-797-7

extension B (.40")

041877newarrow4430

22

04-798-5

extension C (.80")

041878newarrow4431

22

metric

extension A (5 mm) for metric models

041873newarrow4432

22

metric

extension B (10 mm) for metric models

041874newarrow4433

22

metric

extension C (20 mm) for metric models

041875newarrow4434

24

04-800-9

nut

041879newarrow4435

26

04-801-7

spring

041880newarrow4436

27

adjusting wrench for screw 041881 (0.9 mm)

041881Anewarrow4437

27

04-802-5

screw

041881newarrow4438

28

04-803-3

centering sled (steel)

044117newarrow4439

28

centering sled (carbide)

044118newarrow4440

29

04-804-1

depth stop attachment, short

IA2-29newarrow4441

30

04-805-8

depth stop attachment, long

IA2-30newarrow4442

31

04-806-6

knurled button for depth stop

IA2-31newarrow4443

32

04-807-4

contact holder (inch and metric)

044120newarrow4444

32

contact holder with inch contacts and 3 extensions

044121newarrow4445

32

contact holder with metric contacts and 3 extensions

044119newarrow4446

34

04-808-2

measurement chart (inch)

041889newarrow4447

35

04-809-0

wrench for contacts (made in Germany)

042066newarrow4448

20-043-6

4" depth extension

RI-100newarrow4449

Stripped threads

 

The contacts for this size bore gage have M5x0.5 threads. Overtightening the contacts will easily strip the threads in the measuring head. If the threads become stripped, you'll have no choice but to replace the entire head.

 

About contact sizes

 

The nominal size and the actual length of the six contacts is different. If you're missing a contact or need to replace a worn contact, it can be tricky to figure out which one you need. To make it easier, here are the actual overall lengths of the new contacts. Keep in mind that the contacts you have may be worn down and thus a little bit shorter than the new ones.

.80" = .206" approx.
.84" = .248" approx.
.88" = .295" approx.
.92" = .327" approx.
.96" = .370" approx.
1.0" = .405" approx.

 

Compac bore gage repair

 

Professional repair service is available for all Compac, Interapid, Alina and SPI (Swiss) dial bore gages. Please refer to page 30 for details.

 

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This page's most recent revision: 13 December 2009
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