An SS Conical Washer—also known as a Belleville Washer—is a conically shaped disc spring washer made from stainless steel (SS).
Its conical shape allows it to deflect (compress) under load, providing spring tension and maintaining a consistent clamping force in bolted assemblies.

These washers are commonly manufactured from SS 304, SS 316, or SS 410, offering excellent corrosion resistance and durability, even in harsh environments.

Function:

• Acts like a spring to compensate for loosening or relaxation in bolted joints caused by vibration, thermal expansion, or material settling.

• The conical shape absorbs impact loads and reduces fatigue in assemblies subjected to movement or vibration.

• Prevents localized stress or surface damage around the bolt head or nut by distributing load uniformly.

• Helps retain a preload in the bolt over time, maintaining tightness even under changing conditions.

Applications:

• Electrical & mechanical assemblies

• Automotive & aerospace fastenings

• Structural joints under vibration

• Heavy machinery & pumps

• Flange and valve connections

• Marine & chemical equipment (SS 316 preferred)