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TM 55-4920-400-13
They are preceded by the words “(ATTACHING
PARTS)” and are separated from the following
parts by the symbol “_*_”.
a. When a part or assembly is listed for reference
purposes only and/or is called out elsewhere in the
Group Assembly Parts List, the abbreviation “Ref’
appears in the “Units per Assy” column.
b. The following list contains the abbreviations
used in the GAPL. Corresponding words and word
phrases are listed in the right-hand column.
A bbreviation
Ac
Al
Amp
Ar
Assy
Brs
Dc
Dia
Fig
Ft
GAPL
Hd
Hex
In
Lg
Mtg
No.
NHA
Npt
PIN
Qty
Ref
Rh
SPDT
Sst
Std
Stl
Thd
Thk
Uf
Vac
Vdcc
Word or Word Phrase
Alternating current
Aluminum
Ampere
As required
Assembly
Brass
Direct current
Diameter
Figure
Foot
Group assy. parts list
Head
Hexagon
Inch
Long
Mounting
Number
Next higher assembly
National taper pipe (thread)
Part Number
Quantity
Reference
Round head,
Right hand
Single pole double throw
Stainless steel
Standard
Steel
Thread
Thick
Microfarad
Alternating current volts
Direct current volts
c. The Numerical index (page 3-26) contains all
part numbers that appear in the Group Assembly
Part List and is compiled in accordance with the nu-
merical part number filing system described below:
d. Part number arrangement starts in the left-
hand (first) position and continues from left to
right, one position at a time, until the part number
numerical arrangement is determined. The order of
precedence in beginning the part number arrange-
ment in the extreme left-hand (first position) of the
part number is as follows (Alphabetical O’s are con-
sidered numerical zeros.):
(1) Letters A through Z.
(2) Numerals O through 9.
e. The order of precedence in continuing the part
number arrangement in the second and succeeding
positions of the part number from left to right is as
follows:
(1) Space (blank position)
(2) Diagonal (slant)
(3) Point (period)
(4) Dash (-)
(5) Letters A thru Z
(6) Numerals O thru 9
NOTE
Alphabetical O’s are considered as numeric zeros.
f. The “Fig. & Index No.” column of the Numer-
ical Index contains the figure and index numbers of
each part and serves to key part number to their lo-
cations in the “Group” Assembly parts list.
g. The “Qty per Art.” column of the Numerical
Index reflects the total quantity of each part num-
ber required per Tester Assembly.
3-27. Vendor’s Codes. The following list “con-
tains the names and addresses of all contractors
supplying items or articles to Satellite Engineering,
The left-hand column contains such contractor’s
code symbols. The code symbols used have been as-
signed in accordance with the Federal Supply Code
for Manufacturers Cataloging Handbook H4-1 and
H4-2.
Federal Mfr’s
Code No.
00758
06769
08779
08806
Manufacturer
Nielsen Products Co.
Elmo, Minn.
Skinner Uniflow Valve
Division, Skinner Pre-
cision Industries, Inc.
Cranford, N. J,
Signal Transformer Co.
Brooklyn, N. Y.
General Electric Co.,
15605
18031
45681
61349
Miniature Lamp Dept.
Nela Park, Cleveland,
Ohio
Cutler Hammer Inc.
Milwaukee, Wis.
Nuclear Products Co.
Cleveland, Ohio
Parker-Hannifin Corp.
Cleveland, Ohio
US Gauge Division of
Ametek Inc.
Sellersville, Pa.
3-8
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