Custom Washers Many customers have a need for custom fabricated washers. Peninsula Spring can manufacture flat, wave, concave, drawn, belleville, and slotted washers to almost any size out of almost any material. Contact | Engineering | Quality Assurance | About Us | Shipping | Materials Used Clips | Electrical Contacts | Flat Springs | Custom Stampings | Custom Washers Assemblies | Tube Formings | Spiral Springs | Power Springs | Custom Springs Wire Forms | Compression Springs | Extension Springs | Torsion Springs | Double Torsion Springs sales@peninsulaspring.com