The MCS35010R10 screw/seal assembly is an aircraft fuel tank transmitter mounting fastener kit used to secure the fuel quantity transmitter (fuel sender unit) to the fuel tank.

It replaces older Cessna-style hardware that used cork or rubber washers and combines a stainless steel screw with an integrated Viton sealing washer to provide a reliable, leak-free installation.

This design improves both sealing and maintenance reliability by eliminating corrosion-prone hardware and preventing fuel seepage around the transmitter mounting points.

Key features include:

Aircraft fuel transmitter mounting screw with integrated seal
Stainless steel hex-drive screw for corrosion resistance
Built-in Viton sealing washer for fuel-tight sealing
Used to secure fuel quantity sender units to fuel tanks
Prevents fuel leaks and vapor seepage at mounting flange
Direct replacement for older Cessna cork seal designs
FAA PMA approved aviation hardware
Typically installed with 5 screws per transmitter
Used in Cessna 150/172/182 fuel tank systems and similar aircraft