P RE S E NTAT IO N O N
NUT AN D B O LT
PRESENTED BY :-
ARE
-HARSHAD S. WAGHM
-OMKAR D. JAGTAP
HISTORY OF NUT AND BOLT
• “NUTS AND BOLTS HAVE BEEN AROUND FOR A LONG TIME. IN
ANCIENT GREECE AND ROME, PEOPLE USED WOODEN SCREWS IN
PRESSES TO MAKE WINE AND OIL. IN THE 15TH CENTURY, METAL
SCREWS AND BOLTS STARTED BEING USED IN EUROPE. DURING
THE INDUSTRIAL REVOLUTION, MACHINES WERE DEVELOPED TO
MASS-PRODUCE BOLTS AND NUTS. IN 1841, JOSEPH WHITWORTH
CREATED THE FIRST STANDARD THREAD SYSTEM, WHICH MADE
BOLTS AND NUTS FIT BETTER AND WORK MORE RELIABLY.
TODAY, THEY ARE USED EVERYWHERE IN CONSTRUCTION,
MACHINES, AND DAILY LIFE.”
EVOLUTION OF MODERN BOLTS
• "IN 1841, STANDARDIZED THREAD BOLTS WERE
DEVELOPED. BY THE 20TH CENTURY, CORROSION-
RESISTANT STAINLESS STEEL BOLTS BECAME
COMMON. WITH THE RISE OF CNC TECHNOLOGY,
PRECISION BOLTS FOR SPECIFIC NEEDS BECAME
POSSIBLE. SPECIAL BOLTS ARE NOW MADE FOR HEAVY
LOADS, VIBRATION RESISTANCE, AND OTHER
INDUSTRIAL APPLICATIONS."
WHAT IS BOLT ?
• "A BOLT IS A LONG METAL ROD WITH THREADS AND A HEAD
ON ONE END FOR TIGHTENING. IT IS USED TO SECURE TWO
OR MORE MATERIALS TOGETHER. BOLTS ARE ESSENTIAL IN
STRUCTURES AND MACHINES, FROM BRIDGES TO CAR
ENGINES. THEY COME IN DIFFERENT SIZES, SHAPES, AND
MATERIALS FOR VARIOUS APPLICATIONS."
WHAT IS NUT
• "A NUT IS A SMALL METAL PIECE WITH INTERNAL
THREADS THAT FIT ONTO A BOLT. IT LOCKS ONTO THE
BOLT, CREATING A SECURE JOINT. NUTS COME IN
DIFFERENT TYPES, LIKE HEX NUTS, WING NUTS, LOCK
NUTS, AND CAP NUTS. THEY ARE DESIGNED TO HANDLE
VIBRATIONS, TEMPERATURE CHANGES, AND LOAD
MANAGEMENT."
MATERIALS USED IN NUT AND BOLTS
• STEEL: STRONG AND DURABLE
• STAINLESS STEEL: CORROSION-RESISTANT
• BRASS: USED FOR AESTHETIC AND ELECTRICAL APPLICATIONS
• PLASTIC: LIGHTWEIGHT, SUITABLE FOR CHEMICAL ENVIRONMENTS
• TITANIUM: LIGHTWEIGHT BUT EXTREMELY STRONG
HOW NUT AND BOLT WORK
• "A BOLT IS INSERTED THROUGH A HOLE IN THE MATERIAL,
AND A NUT IS THREADED ONTO IT. THE NUT IS TIGHTENED
WITH TOOLS LIKE WRENCHES TO CREATE A STRONG
JOINT. THIS JOINT RESISTS VIBRATIONS AND SECURES THE
CONNECTED PARTS."
TYPES OF NUT
• HEX NUT: SIX-SIDED NUT
• WING NUT: EASY TO TIGHTEN BY HAND
• LOCK NUT: PREVENTS LOOSENING DUE TO VIBRATION
• CAP NUT: COVERS THE BOLT FOR SAFETY
• FLANGE NUT: HANDLES HEAVY LOADS
TYPES OF BOLTS
• HEX BOLT: SIX-SIDED HEAD, COMMONLY USED
• CARRIAGE BOLT: ROUNDED HEAD, USED IN WOODWORK
• ANCHOR BOLT: FIXED IN CONCRETE STRUCTURES
• EYE BOLT: FOR LIFTING HEAVY OBJECTS
• MACHINE BOLT: USED IN HEAVY MACHINERY
TOOLS FOR NUTS AND BOLTS
• WRENCH: TIGHTENS OR LOOSENS BOLTS
• SPANNER: USED FOR DIFFERENT BOLT SIZES
• SOCKET WRENCH: REDUCES EFFORT IN TURNING BOLTS
• SCREWDRIVER: FOR SMALLER BOLTS
• TORQUE WRENCH: ENSURES PRECISE TIGHTNESS
APPLICATIONS OF NUTS AND BOLTS
• AUTOMOBILE INDUSTRY: ENGINE PARTS, CHASSIS
• CONSTRUCTION: BRIDGES, BUILDINGS
• HOME APPLIANCES: FURNITURE, DEVICES
• ELECTRONICS: CIRCUIT BOARDS
• AEROSPACE: LIGHTWEIGHT BUT STRONG JOINTS
FUN FACTS ABOUT NUTS AND BOLTS
• THE WORLD’S LARGEST BOLT IS 27 FEET LONG
• NASA USES SPECIAL CORROSION-RESISTANT BOLTS FOR
SPACE MISSIONS
• SOME BOLTS ARE DESIGNED TO BREAK WHEN
OVERLOADED
• JAPANESE MACHINES USE MICRO BOLTS
ENVIRONMENTAL IMPACT OF NUTS AND BOLTS
• "PRODUCING METAL BOLTS AND NUTS REQUIRES
MINING, WHICH IMPACTS THE ENVIRONMENT.
HOWEVER, ADVANCEMENTS IN RECYCLING HELP
REDUCE WASTE. STAINLESS STEEL AND OTHER
MATERIALS ARE RECYCLABLE, MAKING THEM ECO-
FRIENDLY CHOICES. INDUSTRIES NOW FOCUS ON
SUSTAINABLE PRODUCTION METHODS TO MINIMIZE
ENVIRONMENTAL DAMAGE."
SAFETY TIPS FOR USING NUTS AND BOLTS
• ALWAYS CHOOSE THE CORRECT SIZE AND TYPE OF BOLT FOR THE JOB.
• TIGHTEN BOLTS EVENLY TO AVOID DAMAGE.
• USE WASHERS TO DISTRIBUTE LOAD AND PREVENT LOOSENING.
• REGULARLY CHECK BOLTS FOR WEAR, RUST, OR LOOSENING.
• STORE NUTS AND BOLTS IN A DRY PLACE TO PREVENT CORROSION.
CHALLENGES IN USING NUTS AND BOLTS
• VIBRATION ISSUES: CAN LOOSEN FASTENERS OVER TIME.
• CORROSION: WEAKENS JOINTS, ESPECIALLY IN WET ENVIRONMENTS.
• OVER-TIGHTENING: DAMAGES THREADS AND REDUCES EFFECTIVENESS.
• SIZE SELECTION: WRONG SIZES CAN COMPROMISE STRENGTH AND SAFETY."
THANK YOU GUYS
