AIA/NAS 1802-2013 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 OR AMS5853.
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 1, TYPE 2 OR TYPE 8, CLASS 4.
PASSIVATE PER AMS2700 METHOD 1 , TYPE 8, CLASS 4 – NO POST TREATMENT,
PASSIVATE PER AMS2700 METHOD 2 – NO POST TREATMENT OR
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 PER AMS2700 METHOD 1 , TYPE 2 OR 8, CLASS 4.
LETTER “B” FOLLOWING THE SECOND DASH NUMBER INDICATES PASSIVATE PER AMS2700 METHOD 2 – NO POST TREATMENT.
LETTER “M” FOLLOWING THE SECOND DASH NUMBER INDICATES PASSIVATE PER AMS2700 METHOD 1 , TYPE 8, CLASS 4 – NO POST TREATMENT.
LETTER “P” FOLLOWING SECOND DASH NUMBER INDICATES CADMIUM PLATE.
EXAMPLES OF PART NUMBER:
NAS1802-4-16 = .2500-28 UNJF-3A SCREW, 1.000 LONG, PASSIVATED PER AMS2700 METHOD 1 , TYPE 2 OR 8, CLASS 4.
NAS1802-04-12 = .1120-40 UNJC-3A SCREW, .750 LONG, PASSIVATED PER AMS2700 METHOD 1 ,TYPE 2 OR 8, CLASS 4.
NAS1802-4D16 = .2500-28 UNJF-3A SCREW, DRILLED HEAD, 1.000 LONG, PASSIVATED PER AMS2700 METHOD 1 , TYPE 2 OR 8, CLASS 4.
NAS1 802-4D1 6B = .2500-28 UNJF-3A SCREW, DRILLED HEAD, 1 .000 LONG, PASSIVATED PER AMS2700 METHOD 2 – NO POST TREATMENT.
NAS1 802-4D1 6M = .2500-28 UNJF-3A SCREW, DRILLED HEAD, 1 .000 LONG, PASSIVATED PER AMS2700 METHOD 1 , TYPE 8, CLASS 4- NO POST TREATMENT.
NAS1802-4D16P = .2500-28 UNJF-3A SCREW, DRILLED HEAD, 1.000 LONG, CADMIUM PLATED.
NOTES:
(1) TOLERANCES UNLESS OTHERWISE SPECIFIED: DECIMALS ± .010, ANGLES ± 1°./2/ SCREW LENGTHS OF TWO INCHES OR LESS SHALL HAVE AN UNTHREADED SHANK OF .032 TO .064 ADJACENT TO THE HEAD TO SHANK FILLET RADIUS WITH A “ØD” SHANK AS TABULATED IN TABLE I.SCREWS OVER TWO INCHES LONG SHALL HAVE A MINIMUM FULL THREAD FORM LENGTH OF 1.75 INCHES AND AN UNTHREADED “ØD” SHANK SEGMENT TO WITHIN A MINIMUM

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