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1. MECHANICAL
FASTENERS

2. CONTENTS…
• FASTENER DEFINATION
• FASTENER CLASSIFICATION
• NON-DETACHABLE FASTENER
• DETACHABLE FASTENER
• NON-THREADED FASTENER
• THREADED FASTENER
• NUTS AND BOLTS
• TYPES OF BOLT
• TYPES OF NUT
• TYPES OF SCREW

3. INTRODUCTION
FASTENER DEFINATION
• A MECHANICAL ELEMENT WHICH HOLDS TWO OR MORE
PARTS
OF MACHINE OF A STRUCTURE IS KNOWN AS FASTENER.
THE
PROCESS IS CALLED FASTENING.

4. FASTENER CLASSIFICATION FASTENERS
DETACHABLE
FASTENERS
NON
DETACHABLE
FASTENERS
THREADED
FASTENERS
NON-THREADED
FASTENERS
EXTERNALLY
THREAD
INTERNALLY
THREADED

5. DETACHABLE FASTENERS
{IT DOES NOT INVOLVES
DESTRUCTION DURING
SEPARATION}
THREADED
FASTENERS
NON-THREADED
FASTENERS

6. NON-THREADED FASTENER
PINS SNAPRING CLAMPS CLIPS
SPLINES KEYS NAILS

7. THREADED FASTENER
THREAD
TERMINOLOGY
THREAD
TERMINOLOGY
EXTERNAL
THREAD
RIGHT
HAND
THREAD
-BOLT &
SCREW
INTERNAL
THREAD-
NUTS,THREADED
HOLE
LEFT
HAND
THREAD

8. NUTS AND BOLTS
A nut is a type of hardware fasteners with a threaded hole.
Nuts are almost always used opposite a mating bolt to fasten a
stack of parts together.
The two partners are kept together by a combination of their
threads' friction, a slight stretch of the bolt, and compression
of the parts.
A washer is a thin plate typically disk-shaped with a hole that
is normally used to distribute the load of a threaded fastener.

9. TYPES OF BOLT (EXTERNAL THREAD)

10. TYPES OF NUT (INTERNAL THREAD)

11. TYPES OF SCREW
THREAD
CUTTING
SCREW
WOOD
CUTTING
SCREW
MACHINE
SCREW
SELF DRILLING
SCREW
SHEET METAL
SCREW

12. NON-DETACHABLE FASTENER
{ IT INVOLVES DESTRUCTION DURING SEPARATION}
RIVETS PRESS FITS SHRINK FIT ADHESSIVE
BRAZING &
SOLDERING
WELDING