WASHER, INSULATOR (P/N 302-0640-190) - New Surplus

The 302-0640-190 is a nonconductive insulator washer designed to electrically isolate fasteners from aircraft structures and panels. Made from polymer or laminate material, this washer prevents unintended ground paths and bonding between hardware and mounting surfaces in avionics racks and electrical assemblies. Installation involves placing the washer between the fastener and mounting surface, then torquing per aircraft maintenance manual specifications.

Commonly used in avionics installations where electrical isolation is critical to system performance and safety.

What is the WASHER, INSULATOR (P/N 302-0640-190)?

The 302-0640-190 is a nonconductive insulator washer designed to electrically isolate fasteners from aircraft structures and panels. Made from polymer or laminate material, this washer prevents unintended ground paths and bonding between hardware and mounting surfaces in avionics racks and electrical assemblies.

Does the 302-0640-190 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The WASHER, INSULATOR conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.

What material is the 302-0640-190 manufactured from?

Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the 302-0640-190.

Can I order the 302-0640-190 in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The WASHER, INSULATOR is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.