AIA/NAS 1802-2012 pdf download SCREW, HEX HEAD, CRUCIFORM RECESS, FULL THREAD, A286 CRES, 1 60 KSI Ftu
MATERIAL:
CRES: A286 (UNS S66286) CONFORMING TO THE CHEMISTRY OF AMS5731,AMS5732, AMS5737 ORAMS5853
HEAT TREATMENT:
DEVELOP BASIC MATERIAL PROPERTIES AS FOLLOWS,WITH CONTROLS PER AMS2759:160-190 KSI Ftu.PRECIPITATION HARDENING IN ACCORDANCE WITH AMS5853./11/
FINISH:
PASSIVATE PER AMS2700,METHOD 1TYPE 2 OR TYPE 8CLASS 4.CADMIUM PLATE PER AMS-QQ-P-416.TYPE II.CLASS 2
CODE:
FIRST DASH NUMBER INDICATES DIAMETER PER TABLE I.
DASH (“-”) FOLLOWING FIRST DASH NUMBER INDICATES UNDRILLED HEAD.
LETTER “D” FOLLOWING FIRST DASH NUMBER INDICATES DRILLED HEAD (-3 THRU -6 SIZES ONLY).
SECOND DASH NUMBER INDICATES LENGTH IN .0625 INCREMENTS.
NO LETTER FOLLOWING THE SECOND DASH NUMBER INDICATES PASSIVATED FINISH.
LETTER“P”FOLLOWING SECOND DASH NUMBER INDICATES CADMIUM PLATE.
EXAMPLES OF PART NUMBER:
NAS1802-4-16.2500-28 UNJF-3A SCREW，1.000 LONG，PASSIVATEDNAS1802-04-121120-40 UNJC-3A SCREW，750 LONGPASSIVATED.NAS1802-4D162500-28 UNJF-3A SCREW,DRILLED HEAD，1.000 LONGPASSIVATED-NAS1802-4D16P.2500-28 UNJF-3A SCREW,DRILLED HEAD，1.000 LONG,CADMIUM PLATED.
NOTES:
TOLERANCES UNLESS OTHERWISE SPECIFIED: DECIMALS .010,ANGLES 1
SCREW LENGTHS OF TWO INCHES OR LESS SHALL HAVE AN UNTHREADED SHANK OF 032 TO .064ADJACENT TO THE HEAD TO SHANK FILLET RADIUS WITH A “OD” SHANK AS TABULATED IN TABLESCREWS OVER TWO INCHES LONG SHALL HAVE A MINIMUM FULL THREAD FORM LENGTH OF 1.75INCHES AND AN UNTHREADED “OD” SHANK SEGMENT TO WITHIN A MINIMUM DISTANCE FROM THEHEAD TO SHANK FILLET RADIUS OF .032 INCH. THE THREAD MAJORPITCH AND MINOR DIAMETERSIN THE THREADED PORTION OF THE SCREW SHALL BE IN ACCORDANCE WITH THE AS8879 THREADSPECIFICATION.
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