FASTENERS
presented by.
Andales
Antolijao
Andrade
Acierto
Albopera
IMPORTANCE OF FASTENERS AND
THEIR SAFETY
•Fasteners are hardware devices used to mechanically join or
secure two or more objects together.
SIGNIFICANCE OF FASTENERS
•Structural Integrity: Ensure stability and safety in construction
and machines.
•Maintenance Access: Allow easy disassembly for repairs.
•Versatility: Used across industries, from small gadgets to
large infrastructure.
SAFETY CONSIDERATIONS:
•Proper Installation
Tighten fasteners to the correct specifications. Avoid
over-tightening, which can cause material fatigue.
•Material Selection Use corrosion-resistant materials (e.g.,
stainless steel in damp environments).
Select fasteners that can handle the load and stress of their
application.
SAFETY CONSIDERATIONS:
•Inspection and Maintenance
Regularly check for signs of wear or rust.
Replace damaged or worn fasteners
immediately
•Worker Safety Use appropriate tools and PPE to avoid injuries
during installation.
TYPES OF
FASTENERS
BOLTS AND SCREWS
• Hex Bolts: Used in • Carriage Bolts: Designed for wood-
construction for structural to-wood or wood-to-metal
fastening; often used in furniture
steel connections. and outdoor structures.
BOLTS AND SCREWS
• Anchor Bolts: Used to attach • Wood Screws: Designed for
structures to concrete. woodwork, providing a tight
grip without splitting the
material.
BOLTS AND SCREWS
• Machine Screws: Used in • Drywall Screws: Specifically
machinery, appliances, and for securing drywall to wood
automotive parts. or metal studs.
BOLTS AND SCREWS
• Lag Screws: Heavy-duty screws for connecting lumber or other
heavy materials.
NUTS
• Hex Nuts: Standard nuts used •Lock Nuts: Include nylon
with bolts for general inserts to prevent loosening
fastening applications. under vibration.
NUTS
• Cap Nuts: Protect threads and •Wing Nuts: Used for hand-
provide a clean finish, tightening in temporary setups
commonly used in furniture. or where tools aren’t practical.
RIVETS
• Solid Rivets: Permanent •Blind Rivets (Pop Rivets):
fastening used in aircraft and Installed from one side,
bridges. commonly used in
construction and automotive
industries.
RIVETS
• Tubular Rivets: Found in •Split Rivets: Used in soft
leather goods, belts, and materials like leather or
clothing. plastic.
WASHERS
• Flat Washers: Distribute load •Spring Washers: Prevent
evenly and prevent damage to loosening caused by vibration
surfaces. or torque.
WASHERS
• Fender Washers: Larger diameter washers that distribute force over
a wider area, used in automotive and electrical applications.
ANCHORS
• Plastic Anchors: Used for •Expansion Anchors: Provide a
light-duty applications like secure hold in concrete or
hanging pictures on drywall. masonry by expanding as the
screw is tightened.
ANCHORS
• Toggle Bolts: Used for •Drop-In Anchors: Installed in
attaching heavy items like concrete for secure and
mirrors or shelves to hollow permanent anchoring.
walls.
SPECIALTY FASTENERS
• Threaded Inserts: Provide • Eye Bolts: Designed for lifting
threads in softer materials like or securing ropes and cables.
wood, plastic, or aluminum.
SPECIALTY FASTENERS
• U-Bolts: Used to secure pipes or round objects to flat surfaces.
