Re: 840 Manifold nuts steel or brass?

Posted by Packardbarry On 2019/4/20 9:08:02

NUT: 5/16-24 17/64 1/2
LK WASHER: 21/64 15/32 1/16
FLAT WASHER: 21/64 5/8 1/8

STEEL. Parts Book states "PLAIN" for Nut & Flat and "STD" for Lock.

If there is or was plating on them ive never seen it. PARTS BOOK does not spec plating or SPECIAL which would make u think it was plated. 12s were Nickel Plated along with the tip of the stud but have never seen any plating of the 8s. Would have made senses to use brass nuts, which i have seen on other marques, but have not seen on PACKARDs. Restoring i go for SS nuts and flat. Forget going with a SS lock - if there is a good SS lock out there i havent found one.

There is a good virgin 1200 a few miles away. Next time im out that way ill stop by and take a lookc. NEVER SAY NEVER