Pump Assembly: Used to secure the air motor to the pump tube in Apex-HP 15kg/50kg models. Compressor Installation: Essential for bolting Zion Air Compressors to floor mounts or tanks to dampen mechanical noise. Automotive Maintenance: Used in suspension and engine repair where fasteners are subject to high heat and movement. Electrical Panels: Star washers are used to ensure a "bite" through paint for proper electrical grounding of metal enclosures. General Fabrication: A staple for any workshop building steel frames, trolleys, or material handling racks.