Topic: '69 Ram Air Cleaner base mounting bracket nut

[69supercj]

What is the correct style for the nut used to secure the air cleaner base to the bracket located on the drivers side? Silver cad/zinc, oil and phosphate? Did it have an integral star lock washer or not. Did it use a separate lock washer? Thanks!

[jwc66k]

According to the "1969 Mustang Chassis Assembly Manual" (AM0030) page 25, the nut is 34661-S2, 5/16-18 Hex with an external tooth lock washer, the same as the nut used from that bracket (C9ZF-9A627-C) to the air cleaner housing base.
It is documented in this forums library in topic "Mustang Hardware Spreadsheet 1969-70", file "MHW69-70AP06" which lists hardware by application, "Air Cleaner Bracket,Ram Air-Intake . ." to both manifold and housing.
I suggest you get a set of the Osborn Mustang Assembly Manuals for your year car.
Jim

[J_Speegle]

Appears that what was typical was an integrated toothed washer in P & O it appears from these unrestored examples from all three plants

[69supercj]

Thank you sir, just what I was needing!!