Nut Tapping
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NUT TAPPING

We have in-house servo powered, pitch control Automate Nut tapping machines with higher speed & best accuracy of threads. We have production capacity of nuts 100 Ton per month. We also take pride in the fact that we can also do nut tapping on our parts after heat treatment. This is because we have very robust tapping machines.

Machine is designed with Double Spindle Head which gives high production rate at the same platform with single operator, single motor, single coolant pump and double the production then in single spindle.

What is Nut Tapping?

The nut tapping machine is a kind of machine for machining internal threads in nuts on the inner side of the holes with various specifications with through holes or blind holes.

Name of machine

Category

Capacity

Make

Year of Establishment

Total number of machines

 

 

 

 

 

 

Servo control Vertical tapping machines

2nd operation

M-64

-

2018

2

Horizontal threading machines

2nd operation

ø 32

Kirloskar

2003

6

We can do different type (V-thread, Square thread, Circular thread etc.) of threading –

  • UN/UNF
  • NPT/NPTF
  • BSPP (BSP, parallel)
  • BSPT (BSP, tapered)
  • metric parallel
  • metric tapered

We provied higer accuracy of thread as per standred requierd. We use high quality of threading Tap which we import from Italy, Germany & Japan. The each nut thread quality checkd by plug gauges for higer Customer satisfaction .

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Tapping Procedures

Good Practices
Using Tap Guides

Tap guides are an integral part in making a usable and straight tap. When using the lathe or the mill, the tap is already straight and centered. When manually aligning a tap, be careful, as a 90° tap guide is much more accurate than the human eye.

Using Oil

When drilling and tapping, it is crucial to use oil. It keeps the bits from squealing, makes the cut smoother, cleans out the chips, and keeps the drill and stock from overheating.

Pecking

Pecking helps ensure that bits don’t overheat and break when using them to drill or tap. Peck drilling involves drilling partway through a part, then retracting it to remove chips, simultaneously allowing the piece to cool. Rotating the handle a full turn then back a half turn is common practice. Whenever the bit or tap is backed out, remove as many chips as possible and add oil to the surface between the drill or tap and the workpiece. Hand Tapping Procedure 1. Select drill size from chart. When choosing a tap size, this chart is the first place to look

Select drill size from chart

When choosing a tap size, this chart is the first place to look.


Tap & Clearance Drill Sizes

THREADSIZE

DRILL DIAMETER

Coarse Thread

TAP
DRILLSIZE

1-64

.0595

No. 53

2-56

.0700

No. 50

3-48

.0785

No. 47

4-40

.0890

No. 43

5-40

.1015

No. 38

6-32

.1065

No. 36

8-32

.1360

No. 29

10-24

.1495

No. 25

12-24

.1770

No. 16

1/4-20

.2010

No. 7

5/16-18

.2570

‘F’

3/8-16

.3125

5/16

7/16-14

.3680

‘U’

1/2-13

.4219

27/64

9/16-12

.4844

31/64

5/8-11

.5312

17/32

3/4-10

.6562

21/32

7/8-9

.7656

49/64

1″-8

.8750

7/8

Fine Thread

0-80

.0469

3/64

1-72

.0595

No. 53

2-64

.0700

No. 50

3-56

.0820

No. 45

4-48

.0935

No. 42

5-44

.1040

No. 37

6-40

.1130

No. 33

8-36

.1360

No. 29

10-32

.1590

No. 21

12-28

.1820

No. 14

1/4-28

.2130

No. 3

5/16-24

.2720

‘I’

3/8-24

.3320

‘Q’

7/16-20

.3906

25/64

1/2-20

.4531

29/64

9/16-18

.5156

33/64

5/8-18

.5781

37/64

3/4-16

.6875

11/16

7/8-14

.8125

13/16

1″-14

.9375

59/64

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