Steps to reproduce.
1.) Have a tool cupboard
2.) Put metal frags in tool cupboard
3.) Put hammer/building plan/hose/wire/pipe in tool cupboard.
4.) Sort A-Z.
Result: metal frags take up tool slots in the tool cupboard, allowing for higher upkeep than normal.
Video attached if necessary. Unsure if this works for other materials, but I assume it does. Thanks for the work you guys do 
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