NN-K-231E, FEDERAL SPECIFICATION: KEGS, WOOD, SLACK (13 OCT 1966) [S/S BY PPP-B-1806]

NN-K-231E, FEDERAL SPECIFICATION: KEGS, WOOD, SLACK (13 OCT 1966) [S/S BY PPP-B-1806]., This specification covers the requirements for wood, slack kegs for use as shipping containers for nails, bolts, nuts, and similar items.