gonefishn

What type of washer is a "p washer"?

What type of nut (assuming locking nut but didn't think nylon ones were used) is a "L nut"?

Thanks,
John

Mike McCoy

The most common "locking nut" except nylon (nylock) was simply a nut with slits around the extended head. It had a clamping capability. Don't know about the "p" washer.

62Jeff

In what context is P washer used?

I'd guess "panel washer", as in a large flat washer with a small diameter hole, also called a fender washer.

65tripleblack

Yes, a "P" washer is a flat washer.

jerrybramlett

I believe GM used the "p" to mean plain. I think it is an unusual term for a flat washer, at least around here.

62Jeff

That may very well be the best answer. P for plain washer, L for lock washer.

It's been too many years since I looked at an AIM for assembly guidance at that level.

JohnZ

That's correct.

toddalin

Actually, he's looking at the shop manual and "P" just happens to be the washer and "L" just happens to be the nut on that page.

Just kidding.

gonefishn

What makes it confusing is the manual has "washer"and "p washer" as if there was a difference. Sometimes says to use "washer" and other times "p washer".

Sometimes it would have the "p washer" followed by a L Washer and visa versa. Other cases would list just a plain "washer" without the "p".

Jeff (62Jeff) the context was used in many pages such as the AC brackets and even the throttle bracket.

Thanks everyone for confirming what the P meant. Still wierd though if not needed to differentiate.

gonefishn

Not to but on a same page an engineer used a "Washer" with a "L Washer" and a "P Washer" with a "L Washer" as if he was truely differentiating the two types of washers and what type to use at each location.

Went also to a 1969 assembly manual (none Chevy) and they also used "P Washer" as well as just "Washer".

Not disagreeing the P Washer is a plain washer as stated, but the engineers did use the two names for differentiating purposes that I don't understand.