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R-407C is a mixture of hydrofluorocarbons used as a refrigerant. It is a zeotropic blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a). Difluoromethane serves to provide the heat capacity, pentafluoroethane decreases flammability, tetrafluoroethane reduces pressure. [ 1 ]
An NSN on the tag of a pair of trousers. A NATO Stock Number, or National Stock Number (NSN) as it is known in the U.S., is a 13-digit numeric code used by the NATO military alliance, identifying all the 'standardized material items of supply' as they have been recognized by all member states of NATO.
The NATO Stock Number or National Stock Number (NSN) is a 13-digit alphanumeric code consisting of a Group of Supply, a Class of Supply and the unique NIIN to designate unique items of supply grouped by their relative catalog category. The first four digits are the NATO Supply Classification (NSC) or Federal Supply Class (FSC) code.
The Federal Stock Number (FSN) was the codification system used by the US Government from 1957 to 1974. It was 11 digits long and was the same number as the NSN (see National Stock Number), minus the two-digit NCB code. The digits "00" were later added in the place of the NCB digits to virtually all FSN numbers to create compliant American 13 ...
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When are the Oscars? The 97th Academy Awards are set for Sunday, March 2, 2025. What time are the Oscars? The 2025 Oscars will air on Sunday, March 2 from 7 p.m. to 10 p.m. ET.
The number of units (i.e., how many bullets or shells there were per box) and packing information (i.e., whether it was in cartons, bandoleers or belts) were on the two lines below it. The caliber (CAL .45, CAL .30, or CAL .50) was painted in bold lettering in the upper left corner.
The Federal Stock Number was officially replaced by the National Stock Number (NSN) beginning on September 30, 1974. The National Stock Number was the same number as the FSN, plus the two-digit National Codification Bureau (NCB) "Country Code" added between the FSCG code and the item code.