AIA/NAS 463-2009 pdf download NUT SPACER, PLATE, PLAIN
CODE:
“F” ADDED TO BASIC NUMBER FOR CORNER TYPE.
“T” ADDED TO BASIC NUMBER FOR ONE LUG TYPE.
“W” ADDED TO BASIC NUMBER FOR TWO LUG TYPE.
“X” ADDED TO BASIC NUMBER FOR TWO LUG FLOATER TYPE.
“Y” ADDED TO BASIC NUMBER FOR ONE LUG FLOATER TYPE.
“K” ADDED TO BASIC NUMBER FOR COUNTERSUNK RIVET HOLES. /2/
NO PREFIX TO DASH NUMBER FOR CARBON OR ALLOY STEEL.
“C” PREFIX TO DASH NUMBER FOR CRES, PASSIVATED.
“CA” PREFIX TO DASH NUMBER FOR CRES, ALUMINUM PIGMENT COATED.
“DD” PREFIX TO DASH NUMBER FOR ALCLAD ALUMINUM ALLOY.
“G” SUFFIX AFTER THICKNESS CODE INDICATES 2 COATS OF EPOXY PRIMER PER MIL-PRF-85582 OR
MIL-PRF-23377, TYPE I, CLASS OPTIONAL. DIMENSIONS APPLY PRIOR TO PRIMER APPLICATION.
“L” SUFFIX TO DASH NUMBER INDICATES .01 6 THICKNESS.
“M” SUFFIX TO DASH NUMBER INDICATES .032 THICKNESS.
NO SUFFIX TO DASH NUMBER INDICATES .063 THICKNESS.
“H” SUFFIX TO DASH NUMBER INDICATES .090 THICKNESS.
EXAMPLE OF PART NUMBER:
NAS463 F K DD 51 6 L G
PRIMER OPTION (SEE CODE SECTION)
THICKNESS CODE (SEE CODE SECTION)
DASH NUMBER FROM TABLE I
MATERIAL CODE (SEE CODE SECTION)
COUNTERSUNK RIVET HOLE CODE (IF REQUIRED), SEE CODE
SECTION /2/
TYPE CODE FROM TABLE I
BASIC NUMBER
NOTES:
/1 / TYPES “B” AND “C” INACTIVE FOR DESIGN AFTER 3-1 5-55. SEE TYPES “X” AND “Y”. FOR DESCRIPTION OF STATUS NOTE SEE NAS380.
/2/ THE RIVET HOLES (ØK) FOR “K” CODED SHIMS .01 6 AND .032 THICK SHALL BE DIMPLED, AND FOR .063 AND .090 THICK SHALL BE MACHINE COUNTERSUNK TO THE FOLLOWING DIMENSIONS:
ØK DRILL .1 05…..1 00° X .203 DIA.
ØK DRILL .1 37…..1 00° X .250 DIA.
(3) REMOVE ALL BURRS AND SHARP EDGES.

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