[Elecraft] K3 assembly: split lockwasher: #4 same as 4-40 ?

[Don Wilhelm]

Andrew,

They are the same, although for a washer or lockwasher, the 4-40 is a 
misnomer, the #4 designation for the hole size is correct, but the -40 
refers to the thread pitch, and there are no threads in a washer.
Just for additional information, most of the screw hardware in the K3 is 
4-40 although there are a few 2-56 size.  There is a big difference in 
the diameter, so you are not likely to mix the two.

73,
Don W3FPR

Andrew Moore wrote:
> K3 manual Rev L, page 16, references "4-40 split lockwasher" and "#4 split
> lockwasher"
>
> Are these the same?  All the inventory pages say #4
>
>