Need parts old Parker Hale

[BestFoot74]

I bought my 3 bander in 1975 from a dealer in Mississippi. I am looking for a mainspring that will fit, ( I have used armi sport or euroarms in the past but I don't remember which one fit) and I need the 2 lockplate screws. For decent prices.
thanks
mike boyd

[GPM]

S&S has the sidelock screws.

[Damon]

Lodgewood list parts for the Parker Hale as well.