MIL-PRF-27401G
This specification is approved for use by all Departments and Agencies of the Department of Defense.
1.
SCOPE
1.1 Scope. This specification covers the requirements for three grades and two types of
nitrogen.
1.2 Classification. The nitrogen will be of the following types and grades as specified (see 6.2).
1.2.1 Types. The types of nitrogen are as follows:
Type I
-
Gaseous
Type II
-
Liquid
1.2.2 Grades. The grades of nitrogen are as follows:
Grade A
-
99.5 percent pure, aerospace practices
Grade B
-
99.99 percent pure, space vehicle and cabin environment
Grade C
-
99.995 percent pure, special applications
1.3 Part or identifying number (PIN). The PINs to be used for nitrogen acquired to this
specification are created as follows:
M
27401 - X
X
Example of PIN: M27401-2B
Grade (see 1.2.2).
Type (see 1.2.1). Use 1 for Type I, 2 for Type II.
Specification number.
Prefix for military specification.
2.
APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this
specification. This section does not include documents cited in other sections of this specification or
recommended for additional information or as examples. While every effort has been made to ensure the
completeness of this list, document users are cautioned that they must meet all specified requirements of
documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed.
2.2 Government documents.
2.2.1 Specifications, standards, and handbooks. The following specification forms a part of this
document to the extent specified herein. Unless otherwise specified, the issue of this document is the
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