AIA/NAS 518-2011 pdf download GAGE, 1 00 DEGREES FLAT HEAD FLUSHNESS
MATERIAL:
TOOL STEEL
HEAT TREAT:
60–62 HRC
NOTES:
(1 ) “ØA” MAY BE ALTERED IF DESIRED.
(2) MARK PERMANENTLY WITH COMPLETE PART NUMBER.
(3) DASH NUMBERS “2” THRU “8” FOR USE IN INSPECTION OF NAS51 7, AN507, NASM24694, ETC.
(4) “ØD” AND “ØF” CONCENTRIC WITHIN .001 FIM.
(5) “ØF” AND “ØG” CONCENTRIC WITHIN .01 0 FIM.
/6/ PROTRUSION OF GRADE 1 STEEL BALL OF “SØY” DIAMETER AND COMPUTED BY FORMULA:
USE ACTUAL MEASURED BALL DIAMETER IN THIS FORMULA CORRECT TO FOUR DECIMAL PLACES.
/7/ DIAMETER IS PROPORTIONED SO THAT EDGE OF INTERSECTION BETWEEN “ØD” AND UPPER GAGE SURFACE CAN NOT BE SHARP BUT WILL HAVE A LAND OF APPROX .003. THIS LAND OBTAINED BY LAPPING WITH STEEL BALL OF “SØY” NOMINAL DIAMETER UNTIL DIMENSION “P” IS OBTAINED.
(8) SURFACE ROUGHNESS SHALL BE IN ACCORDANCE WITH ASME B46.1 AND SURFACE TEXTURE SYMBOLS SHALL BE IN ACCORDANCE WITH ASME Y1 4.36M.
(9) DIMENSIONS IN INCHES.
(1 0) THIS STANDARD TAKES PRECEDENCE OVER DOCUMENTS REFERENCED HEREIN.

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