MTC Contact Points for dial & digital indicators
with round or flat surfaces

 

  • Contact points for test indicators are shown on page 21.
  • Contact points in general:

Round ball contact: cupped style in carbide, ruby, Nylon or Teflon

 

The most common, and probably most useful contact point has a large 3 mm diameter carbide ball (.06" radius) set into the cupped end of the point. Only a portion of the ball will be visible. The ball does not rotate and is not designed to rotate. This type of contact point should be used when flat surface measurements are taken.

Carbide will provide a long useful life for these points particularly if any sliding motion is involved. Sliding the test piece under the contact point will inevitably wear down the point. For special applications, this ball can be made of synthetic ruby, Teflon or Nylon. The length (L) of the point can be altered by using a separate length extension.


Ball diameter is 3 mm
Outside diameter is 5 mm

Order no.

Ball material

Ball Ø

Thread Ø

Length

Price USD

MTC10-02

Carbide

3 mm

4-48

.25"

19.50

MTC10-11

Carbide

3 mm

4-48

1"

19.50

MTC10-03

Ruby

3 mm

4-48

.25"

29.50

MTC10-12

Ruby

3 mm

4-48

1"

29.50

MTC10-04

Teflon

3 mm

4-48

.25"

29.50

MTC10-13

Teflon

3 mm

4-48

1"

29.50

MTC10-05

Nylon

3 mm

4-48

.25"

19.50

MTC10-14

Nylon

3 mm

4-48

1"

19.50

MTC10-07

Carbide

3 mm

M2.5

.25"

19.50

MTC10-08

Ruby

3 mm

M2.5

.25"

29.50

MTC10-09

Teflon

3 mm

M2.5

.25"

29.50

MTC10-10

Nylon

3 mm

M2.5

.25"

19.50

Mitutoyo dial indicator points with 3 mm diameter ball

M120045 

With the exception of MTC44-14, these Mitutoyo style indicator points have recessed .120" (8 mm) diameter balls made of carbide, steel, ceramic or ruby. They will fit any brand indicator with the correct thread diameter.
 

Order No.

Mitutoyo No.

Material

Ø x L

Thread Ø

Price USD

MTC44-09

120045

Carbide

3 mm x 8.0 mm

M2.5

19.50

MTC44-16

n/a

Ceramic

3 mm x 8.0 mm

M2.5

29.50

MTC44-14

900032

Hardened steel

.160" x .25"

4-48

9.50

MTC44-10

120047

Ruby

3 mm x 8.0 mm

M2.5

29.50

Mitutoyo Spherical Contact Points

MTC4602 

Spherical steel point designed for Mitutoyo indicators but can be used on any other brand as long as you select the proper thread type.

Order No.

Mitutoyo No.

Diameter (D)

Length (L)

Radius

Thread type

Price

MTC46-01

101205

1/8"

1/8"

.28"

Inch 4-48

$7.95

MTC46-02

101204

3/8"

3/32"

.35"

Inch 4-48

$6.95

MTC46-03

101119

10 mm

5 mm

7 mm

Metric M2.5

$7.95

Ball exposed style


Different ball diameters are available for this style.

Rather than being incorporated into the contact point, these balls are brazed onto the ends. They're suitable for tracing contours or reaching into grooves, slots, recesses and holes.

Order no.

Carbide Diameter

Length

Thread

Price

MTC10-235

.031"

1/2"

4-48

$19.95

MTC10-234

.031" (Ruby)

1/2"

4-48

$38.00

MTC10-236

.062"

1/2"

4-48

$19.95

MTC10-238

.120"

1/2"

4-48

$19.95

MTC10-257R

2.5 mm (Ruby)

1"

4-48

$38.00

MTC10-239

0.8 mm

1/2"

M2.5

$19.95

MTC10-240

1 mm

1/2"

M2.5

$19.95

MTC10-248

1 mm

25 mm

M2.5

$20.95

MTC10-301

1.5 mm

1/2"

M2.5

$19.95

MTC10-241

2 mm

1/2"

M2.5

$19.95

MTC10-241R

2 mm (Ruby)

1/2"

M2.5

$38.00

MTC10-300

2.5 mm

1/2"

M2.5

$19.95

MTC10-242

3 mm

1/2"

M2.5

$19.95

MTC10-258

3 mm

25 mm

M2.5

$24.95

MTC10-350

3.5 mm

1/2"

M2.5

$24.50

MTC10-400

4 mm

1/2"

M2.5

$24.50

MTC10-450

4.5 mm

1/2"

M2.5

$24.50

MTC10-500

5 mm

1/2"

M2.5

$29.95

MTC10-550

5.5 mm

1/2"

M2.5

$29.95

MTC10-600

6 mm

1/2"

M2.5

$29.95

Flat Carbide / Flat Nylon


The diameter (ØA) is .185"

These American-made flat contact points have a carbide face on them. They are about the same diameter as most indicator spindles: .185" (7 mm). You'll be able to get them in a variety of lengths (inquire about lengths not shown below). If you need longer lengths, get an extension. These carbide points will fit all mechanical and digital dial indicators with inch (4-48) or metric (M2.5) threads.

(*) We also offer a similar contact point with a nylon surface instead of the carbide. The layer of nylon is about 1.5 mm (± 0.1) in thickness.

Order no.

Diameter

Length

Thread

Price

MTC08-48

.185" carbide

1/4"

Inch 4-48

$19.95

MTC08-48N

.185" nylon (*)

1/4"

Inch 4-48

$20.95

MTC08-49

.185" carbide

3/8"

Inch 4-48

$19.95

MTC08-51

.185" carbide

3/4"

Inch 4-48

$19.95

MTC08-53

4.7 mm carbide

5 mm

Metric M2.5

$19.95

MTC08-54

4.7 mm carbide

10 mm

Metric M2.5

$19.95

MTC08-55

4.7 mm carbide

15 mm

Metric M2.5

$19.95

Common Radius Points—20% off

 

MTC0705
Radius points are the most common and can be the cheapest of the indicator contact points. The diameter (ØA) is .188" and the radius is 4 mm. There are two styles: they're made of blackened, hardened steel or they have a carbide end, both with a light radius. Although they are available in many different lengths, we think it's best to buy the standard 1/4" length, and then combine it with an appropriate extension. If you'd rather have specific lengths, please inquire.

A discount of 20% applies to quantities of 3 or more of one type when ordered online (for the following Common Radius Points only).

Order Number

Type

Length

Thread

Price

MTC07-05

steel

1/4"

4-48

6.00

MTC07-05-25

steel

1/4"

4-48

40.00 (25 pieces)

MTC07-07

steel

3/8"

4-48

6.00

MTC07-08

steel

1/2"

4-48

6.00

MTC07-27

steel

3 inches

4-48

8.50

MTC07-33

steel

10 mm

M2.5

6.00

MTC07-49

carbide

1/4"

4-48

19.50

MTC07-56

carbide

10 mm

M2.5

19.50

MTC07-58

carbide

25 mm

M2.5

19.50

Flat Point, Carbide Tip recessed

mtc4713 

These flat contact points have a recessed smaller diameter carbide disc brazed onto the surface. Refer to the dimensions shown on the drawing. Designed for Mitutoyo dial indicators and digimatic indicators, but can be used on any indicator having the same thread size.

Examine the dimensions (D/d/L) carefully to make sure you get the correct point.

Order Number

Mitutoyo

Thread

D / d / L

Price

MTC47-09

131259

4-48

.2" / .17" / .2"

21.00

MTC47-10

131260

4-48

.27" / .25" / .4"

32.00

MTC47-11

131261

4-48

.41" / .37" / .4"

39.00

MTC47-12

120041

M2.5

5.2 / 4.3 / 5 mm

21.00

MTC47-13

120042

M2.5

7 / 6.5 / 10 mm

32.00

MTC47-14

120043

M2.5

10 / 9.5 / 10 mm

39.00

Carbide tipped needle point

 

Although designed for Mitutoyo dial indicators, these carbide needle point contacts will fit any other brand of indicator having 4-48 or M2.5 threads.

Keep in mind that carbide is brittle and the longer the point, the more fragile it will be.

Diameter

Length

Thread

Mitutoyo No.

Order No.

Price

.018"

.12"

4-48

131281

MTC46-04

28.00

.040"

.12"

4-48

131280

MTC46-05

20.00

.040"

.5"

4-48

---

MTC12-05

19.50

.040"

1.0"

4-48

---

MTC12-13

25.00

.060"

.5"

4-48

131279

MTC46-06

19.50

.060"

.75"

4-48

---

MTC12-11

19.50

.060"

1.0"

4-48

---

MTC12-15

23.00

.060"

1.5"

4-48

---

MTC12-35

23.00

.078"

.04"

4-48

131271

MTC46-07

19.50

0.45 mm

2.5 mm

M2.5

120066

MTC46-08

24.00

1.0 mm

2.5 mm

M2.5

120065

MTC46-09

19.95

1.5 mm

13 mm

M2.5

120064

MTC46-10

19.50

1.0 mm

25 mm

M2.5

MTC46-52

29.50

Button Point contact points

MTC1103
These button points have large convex discs (hardened, black oxide), useful for special applications of your dial indicators.

3/8" diameter (4-48 thread) ... MTC11-02E ... $9.95
3/8" diameter (M2.5 thread) ... MTC11-02M ... $12.95
1/2" diameter (4-48 thread) ... MTC11-03E ... $9.95
1/2" diameter (M2.5 thread) ... MTC11-03M ... $12.95

Flat Button AGD contact point

IMG1797
These are genuine MTC flat black oxide steel button contact points which can be used on any brand indicator, mechanical or digital, providing you have chosen the correct thread size.

A flat contact is normally used to measure round shapes such as spheres or rods. If it is used for flat surfaces, you will have to make sure it's parallel. The upper surface of the contact point can be used to measure overhangs, undercuts or grooves. Under other circumstances, this type of contact point can be used to measure thickness of foam, soft plastics, fabric or leather where standard contact points would tend to create impressions and result in false readings.

The disc thickness is .095" (~ 2,4 mm).
 

Order Number

Diameter

Thread

Price

MTC11-07

1/4"

black oxide steel

4-48

14.50

MTC11-08

3/8"

black oxide steel

4-48

14.50

MTC11-09

1/2"

black oxide steel

4-48

14.50

MTC11-10

5/8"

black oxide steel

4-48

15.50

MTC11-11

3/4"

black oxide steel

4-48

16.50

MTC11-12

1"

black oxide steel

4-48

17.50

MTC11-13

1.5"

black oxide steel

4-48

21.50

Mitutoyo flat point - disc shaped

MTC1
These durable flat, disc shaped steel contact points can be used on any brand indicator, mechanical or digital, providing you have chosen the correct thread size.

A flat contact is normally used to measure round shapes such as spheres or rods. If it is used for flat surfaces, you will have to make sure it's parallel.

Under other circumstances, this type of contact point can be used to measure thickness of foam, soft plastics, fabric or leather where standard contact points would tend to create indents and result in false readings.

Order Number

Mitutoyo

Diameter : Length

Thread

Price

MTC48-01

101188

1/2" : 3/8"

4-48

14.50

MTC48-02

101189

3/8" : 3/8"

4-48

14.50

MTC48-03

101117

10 mm : 10 mm

M2.5

14.50

Mitutoyo spherical point, carbide tipped

MTC4503a
The carbide tips on these contact points are of a slightly smaller diameter (d) than the rest of the point (D). This feature makes these Mitutoyo style points different from other points, but they can be used on any dial or digimatic indicator with the proper thread size. Length (L) refers to the overall usable length.

Order Number

Mitutoyo

D

d

Thread

Length

Price

MTC45-23

131274

.27"

.25"

4-48

.4"

21.50

MTC45-25

120058

5.2 mm

4.3 mm

M2.5

5 mm

21.00

MTC45-27

120060

10.5 mm

9.5 mm

M2.5

5 mm

32.00

Exposed Carbide Ball - Fractional Size

CP412a1
Carbide balls Grade 25 AFBMA with tolerance of ±.0001" and sphericity of .000025" are mounted on short shafts whose length is B and diameter is C in the chart below. American made.

Metric threads and ball diameters are available on request.

Also, take a look at the "exposed" style 2 contact points.

Order Number

Ball diameter

B / C

Thread

Price

CP406

5/32" (.156")

.250" / .187"

4-48

21.50

CP407

3/16" (.188")

.250" / .187"

4-48

21.50

CP423

1/4" (.25")

.250" / .218"

M2.5

28.50

CP409

1/4" (.25")

.250" / .218"

4-48

28.50

CP412

3/8" (.375")

.312" / .250"

4-48

28.50

CP414

1/2" (.5")

.375" / .250"

4-48

28.50

Flat AGD contact point (steel)

MTC0828 

Standard flat steel contact points come in an assortment of lengths. Additional lengths can be attained by using contact point extensions. All have a flat .187" diameter.
 

Order Number

Length

Diameter

Thread

Price

MTC08-02

3/8"

5 mm

4-48

9.00

MTC08-03

1/2"

5 mm

4-48

9.00

MTC08-05

3/4"

5 mm

4-48

9.00

MTC08-07

1"

5 mm

4-48

9.00

MTC08-28

10 mm

5 mm

M2.5

9.00

MTC08-31

25 mm

5 mm

M2.5

9.50

 

There are more CONTACT POINTS on page 180


The above items constitute advertisements on behalf of Amazon.com and are not to be construed as endorsements by Long Island Indicator Service. We strongly believe in buying quality tools and gages, and urge customers to check carefully before making a purchase. If the prices appear unusually low, we suggest proceeding with caution.
 

 

LONG ISLAND INDICATOR REPAIR MANUALS

BesTest and TesaTast Indicator Repair Manual … page 177
Starrett 711 Last Word Indicator Repair Manual … page 199
Interapid Indicator Repair Manual … page 208
Compac Test Indicator Repair Manual … page 194
Mitutoyo Test Indicator Repair Manual … page 102

New! Companion Reference Guide for Test Indicators … page 178
 

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