W-T-550D, FEDERAL SPECIFICATION, TOASTER, ELECTRIC, POP-UP/POP-DOWN, HEAVY-DUTY, INTERMITTENT (30 JUN 1986)

W-T-550D, FEDERAL SPECIFICATION, TOASTER, ELECTRIC, POP-UP/POP-DOWN, HEAVY-DUTY, INTERMITTENT (30 JUN 1986)., This specification covers type HDI (heavy-duty, intermittent) electric pop-up and pop-down toasters, employed in the toasting of sliced bread. Toasters are of the heavy-duty type, requiring rugged construction to withstand rough handling.