AIA/NAS 1298-2012 pdf download SCREW, BRAZIER HEAD, SHOULDER
MATERIAL:
ALLOY STEEL PER NASM7839, HEAT TREATED 125,000-145,000 PSI Ftu WITH CONTROLS PER
AMS2759.
FINISH:
CADMIUM PLATE PER AMS-QQ-P-416, TYPE II, CLASS 2
PARTS WITH CLASS 3 PLATING MAY RE FURNISHED FROM SUPPLIER’S STOCK UNTIL 15 SEPT. 1977.
CODE:
FIRST DASH NUMBER INDICATES THREAD SIZE AS TABULATED
SECOND DASH NUMBER INDICATES GRIP LENGTH AS TABULATED
LETTER “D” BETWEEN DASH NUMBERS INDICATES DRILLED SHANK
EXAMPLE OF PART NUMBER:
NAS1298-5-10 = SCREW 5/16 THREAD. 3/8 SHANK DIAMETER, .635 GRIP LENGTH
NAS1298-5D10 = SCREW 5/16 THREAD, 3/8 SHANK DIAMETER, .635 GRIP LENGTH, DRILLED SHANK
NOTES:
(1) DIMENSIONS IN INCHES.
(2) THIS STANDARD TAKES PRECEDENCE OVER DOCUMENTS REFERENCED HEREIN.
(3) UNLESS OTHERWISE SPECIFIED, PART INVENTORY MANUFACTURED TO PREVIOUS REVISIONS OF THE APPLICABLE DRAWING OR SPECIFICATION MAY BE PROCURED AND USED UNTIL STOCK DEPLETION.
(4) UNLESS OTHERWISE SPECIFIED HEREIN, REFERENCED DOCUMENTS SHALL BE THE ISSUE IN EFFECT ON DATE OF MANUFACTURE. HOWEVER, EXISTING MATERIAL INVENTORY CERTIFIED TO A PREVIOUS REVISION OF THE APPLICABLE MATERIAL SPECIFICATION(S) IS ACCEPTABLE FOR USE UNTIL DEPLETION.
(5) DIMENSIONS APPLY AFTER FINISH UNLESS OTHERWISE SPECIFIED.
(6) REMOVE ALL BURRS AND SHARP EDGES.
(7) ROLLED OR CUT THREADS OPTIONAL.
/8/ SHANK DIAMETER MAY BE .001 OVERSIZE FOR A MAXIMUM DISTANCE OF 1/32 ADJACENT TO THE HEAD.
(9) HEADED BLANKS FOR NAS220 SERIES SCREWS MAY BE USED.
/10/ SECOND DASH NUMBER INDICATES GRIP LENGTH IN .062 INCREMENTS +.010. ADDITIONAL INTERMEDIATE OR LONGER LENGTHS MAY BE SPECIFIED BY USE OF WHOLE DASH NUMBERS ONLY.
(11) DIMENSIONING AND TOLERANCING PER ANSI Y14.5M-1982.

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