Backing plate lock washers?

[Neil Mylar LakewoodCA]

I've assembled several backing plates in the past, but none of them had lock washers.

I just found a set of backing plate bolts which includes lock washers.

Has anyone ever seen these before?
Unfortunately, I only have one set.

 

[Neil Mylar LakewoodCA]

They are thinner than a normal lock washer.
See picture.

 

[chuckstinn]

Neil
My Oct '28 parts list mentions only 2 long and 2 short bolts with castle nuts and cotters, no lock washers.

 

[Jim/GA]

Lock washers and castle nuts would be redundant. Henry pinched every penny. I doubt this double locking would fly with him.

 

[msmaron]

NOPE no lock washers at all,, Just the Cotter!

 

[Bob C]

The narrower ones are probably for socket head bolts.

Bob

 

[Neil Mylar LakewoodCA]

Thank you for good information.

However, I remember installing the bolts, castle nuts, and cotter pins before and having to bend the cotter pins to fit in the castle nut holes.

If a lock washer or even a solid washer was used before the nut, bending the cotter pin to fit in the castle nut holes would not be necessary.

Please comment.