SWB Stepside bed mounting hardware?

[larey]

So I have a 1980 SWB Stepside and will be mounting the bed in the upcoming future but am to cheap to buy the bed kit as I have already purchased the board hold down kit and found out if I have the spec I can just buy it all at Ace.

So the question is does anyone know the exact specs for the bed hold down hardware?

See below for the board hold down data.

Item Quantity needed
Large Carriage bolts 5/16-18, 1 1/2 length 21
Fender washers 5/16 hole, 1 1/2 diameter 4
Lock Washers 5/16 21
Nuts 5/16-18 21

Small Carriage Bolts 1/4-20, 1 1/2 length 49
Fender Washers 1/4 hole, 1 1/2 diameter 4
Lock Washers 1/4 hole 49
Nuts 1/4-20 49

Hope this helps someone.

Larey