16 / | HD | MISCELLANEOUS HARDWARE |
221 | DF | HINGE {32} |
277 | DF | .~ Resiliently biased hinge {10} |
280 | DF | .~.~ Biased from either direction toward neutral position (e.g., double acting) {4} |
282 | .~.~.~ Plural hinge axes (e.g., multiple pintle) {1} | |
283 | DF | .~.~.~.~> And barrels for helical springs on separate axes |