All the terms that use in thread making and designing.... Mian Adnan Aslam From Sheikhupura , Pakistan...

2. WELLCOME

3. PRESENTATION BY :
ADNAN ASLAM ADNAN
ROLL NO: 9801
CLASS: T.M.R - B
Thread Terminology

4. ☺WHAT IS THREAD ? ? ?
 The continuous helical groove on a screw or
on the inner surface of a nut.

5. Uses of threads:
AS TEMPORARY
FASENTER
FOR POWER
TRANSMISSIOM

6.  THREAD TERMS:
☺MAJOR DIAMETER
☺PITCH DIAMETER
☺MINOR DIAMETER
☺ANGLE OF THREAD
☺DEPTH OF THREAD
☺ROOT ☺ LEAD
☺CREST ☺ FLANK
☺PITCH

8.  It is the largest diameter of an internal or
external screw thread. It is also known as
outside or nominal diameter.

9.  It is the smallest diameter of an internal or
external screw thread. It is also known as core or
root diameter.

10.  Angle of adjacent flanks measured at the
cross-section of the screw thread- included
the axis of the screw thread.

11.  The height between the root and the crest
vertically to the thread axis.

12.  The bottom surface joining the two adjacent
flanks.

13.  The top surface joining the two flanks of a
thread is called crest.

14.  It is the distance from a point on one thread
to the corresponding point on the next point.
This distance to be measured parallel to the
axis of the thread.

15.  Thread face(excluding the root and crest).

16. 9. LEAD
 The distance covered by the nut in a
single revolution on bolt parallel to the
axis is called “LEAD”

17. COMPOSER:
SUBJECT:
CREDITS:
• ADNAN ASLAM
ROLL NO:(9801)
• MACHINE
DESIGN
• MT - 343
• T.M.R ; B
• SESSION:(2009-
12)

18. LINE FOR SESSIONALS