F-F-320C
k. Whether the maximum interval setting for the timer is to be seven days or to six weeks
(see 3.10.3).
l. Type and quantity of accessories or supplies required, if any, and supplementary
requirements therefore (see 3.11).
m. When treatment and painting are to be other than as specified (see 3.13).
n. When on-site inspection is required (4.2.3).
o. When required, whether on-site inspection is to be performed by the installing contractor
or the filter manufacturer (see 4.2.3).
p. Detailed requirements and schedule for on-site tests, when required (see 4.2.3).
6.3 First article. When a first article inspection is required, the item will be tested and should be a
first article sample or it may be a standard production item from the contractor's current inventory
as specified in 4.2.1. The first article should consist of one unit. The contracting officer should
include specific instruction in acquisition documents regarding arrangements for examination, test,
and approval of the first article.
6.4 Classification cross reference. Classifications used in this specification (see 1.2) are identical
to those found in the superseded Federal Specification F-F-320B.
6.5 Part or identifying number (PIN). The specification number, type, style, class, group, and
size are combined to form PINs for filters covered by this document (see 1.2). PINs for the filters
are established as follows:
X
X
X
XXX
FF320
X
Federal Specification number
Type
Style
Class
Group
Size
6.5.1 Cataloging data. For cataloging data purposes, PIN code numbers for filters are assigned
as follows:
1 = Type I
2 = Type II
3 = Type III
A = Style A
B = Style B
C = Style C
D = Style D
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