Thermador Microwave Oven Combo SEM302BB Parts

A small chassis knockout protector that shields wiring and components where factory knockout holes are removed. Helps prevent wire abrasion and keeps openings tidy for safe appliance operation. What it does:

• Fits into a chassis knockout to protect wiring from sharp sheet-metal edges
• Helps prevent cable chafing and short circuits by covering exposed openings
• Keeps out debris while allowing routed harnesses to pass through the cabinet
• Commonly used where service or modifications require a sealed knockout

• One chassis knockout protector

• Install by pressing the protector into the knockout until it seats securely
• Ensure wiring is routed through the protector and not pinched between metal edges
• Disconnect power before servicing appliance to avoid shock or injury

This flat washer secures fasteners and helps distribute load on mounting points to prevent loosening and wear. A small but essential hardware piece for reliable assembly and stable operation. What it does:

• Provides a smooth bearing surface between a fastener head or nut and the part being secured
• Helps distribute clamping force to reduce pressure on softer materials
• Reduces risk of fastener loosening from vibration or movement
• Protects mating surfaces from damage during tightening

• One flat washer

• Inspect mating fastener and surface for damage; replace parts if worn or deformed
• Slide washer onto the bolt or stud before installing the nut or fastener head
• Tighten fastener to the manufacturer's recommended torque if available
• Disconnect power and follow appliance safety procedures before accessing internal components