Should I Always Use a Washer Under the Bolt Head and Nut Face?

Yes, unless you are using flanged fasteners.

Key reasons to use washers:

• Washers distribute the load evenly, reducing pressure points on the material.
• They protect the surface from damage and ensure a more secure connection.
• In applications where vibration is a concern, washers help to maintain integrity and prevent loosening.
• Using washers ensures proper fit between the fastener and the surface, providing optimal performance.