Two shelves enough? No.
Nailing, Screwing: Methods for mechanically joining similar or dissimilar materials.
Reminiscent of childhood days playing at Hall Lumber Company in Saw Mill Holler, East Tennessee….I have sorted and organized hardware this week. Specifically, sorting many varieties of nails and screws discarded over decades from carpentry, drywall, masonry, roofing, fencing and flooring projects.
Larger scope
Miscellaneous times three
The design options and variables are staggering.
- length
- diameter
- size and features of the head
- material
- finish
- coarse or fine thread screws
Observations from various groups
- Rule that three or more types of nails from a project will be mixed 😦
- Original cardboard boxes are bad news for long-term storage
- Designs of nails and screws have improved (some material is functional, but obsolete)
Lead head for tin roofs, Color coördinated for new steel roofs
For asphalt shingles. New ones have plastic “washers”
- One type of hardware remains a mystery
What is this?
Mystery
elfcroft 
I’m no expert but I think it’s some kind of headless screw. Screw in the shiny silver part and them you can attach and remove something on the other end. Attaching hurricane shutters come to mind as one use. Put up the hardware once and you only have to add the boards come storm time. I’m getting ready to do a major reorganization of my tool cabinet. I inherited a lot of my dads tools and need to pare down to the best of the best.