TM 9-1290-357-15
(4) Fourth. Using the Repair Parts Listing,
each item the total quantity authorized for depot
find the assembly group or sub group to which
maintenance of 100 equipments. Subsequent ap-
the repair part belongs and locate the illustration
pearances of the same item will have no entry in
figure and item number located on the illustration.
the column, but will have in the description col-
umn a reference to the first appearance of the
b. When Federal stock number or reference
item. Items authorized for use but not for initial
number is known:
stockage are identified with an asterisk in the
(1) First. Using the Index of Federal Stock
allowance column.
Numbers and Reference Numbers find the per-
k. Illustration.
tinent Federal stock or reference number. This
index is in ascending FSN sequence followed by
(1) Figure Number. Indicates the figure
a list of reference numbers in alpha-numeric se-
number of the illustration in which the item is
quence, cross referenced to the illustration figure
shown.
number and item number.
(2) Item Number. Indicates the callout num-
(2) Second. Using the Repair Part Listing,
ber used to reference the item in the illustration.
find the assembly group or sub group, of the re-
pair part and the illustration figure number and
B-4. Special Information
item number, referenced in the Index of Federal
a. Repair parts mortality has been based on
Stock Numbers and Reference Numbers.
eight hours operations per day.
B-6. Abbreviations
b. The basis of issue for authorized special
tools, test and support equipment is the number
Explanation
of end items of equipment supported and the
AL-ALLOY ---------------
ALUMINUM ALLOY
number of maintenance personnel allocated to
assy --------------------------
assembly
perform the required maintenance.
br -----------------------------
brass
bz -----------------------------
bronze
c. In the Direct Support and/or General
cone-pt ----------------------
cone point
Support Repair Parts List, the quantity shown
corrres-s -------------------
corrosion-resistant-steel
in the column headed 30-Day Maint Allowance
cyl ----------------------------
cylinder
is computed on the basis of 120, 2150, 51100,
diam -------------------------
diameter
equipments authorized to the direct support and/
drilled
or general support company. Other allowance
dog point
columns are blank.
fillister head
finish
d. Parts which require manufacture or assem-
flat fillibuster head
bly at a category higher than that authorized for
flat head
installation will indicate in the source column
flat point
grade
the higher category.
hdls --------------------------
headless
ID -----------------------------
inside diameter
B-5. How to Locate Repair Parts
internal teeth
int-teeth --------------------
lg ----------------------------
long
a. When Federal stock number or reference
NF --------------------------
National Fine Thread
number is unknown:
ni-sil ------------------------
nickel silver
(1) First. Using the table of contents deter-
NS
--------------------------
National Form Thread, Special
mine the assembly group or subassembly group,
Pitch
OD
-------------------------
outside diameter
within which the repair part belongs. This is
ovalfil-hd -----------------
oval fillister head
necessary since illustrations are prepared for as-
pbz --------------------------
phosphor bronze
sembly groups or sub groups, and listings are
rd -----------------------------
round
divided into the same groups.
ru
-----------------------------
rubber
(2) Second. Find the illustration covering
S
------------------------------
steel
SP
----------------------------
the assembly group or sub group to which the
special
thk
----------------------------
thick
repair part belongs.
tm-pltd ----------------------
tim plated
(3) Third. Identify the repair part on the
univ-hd -----------------------
universal head
illustration and note the illustration figure and
UNF --------------------------
unified national fine thread
item number of the repair part.
wide
wd ----------------------------
