AIA/NAS 5310-2011 pdf download SCREW, SHEAR, 1 30 DEG FLUSH HEAD, CLOSE TOLERANCE, NAS1 800 SIX LOBE RECESS, 95 KSI FSU
MATERIAL:
CRES − A286 (UNS S66286) CONFORMING TO THE CHEMISTRY OF AMS5731, AMS5732, AMS5737 OR AMS5853.
TITANIUM ALLOY − 6AL-4V (UNS R56400) PER AMS4928 OR AMS4967.
HEAT TREATMENT:
DEVELOP BASIC MATERIAL PROPERTIES AS FOLLOWS, WITH CONTROLS PER AMS-H-6875 OR AMS2759 FOR CRES AND AMS-H-81200 OR AMS2801 FOR TITANIUM.
CRES − 160-190 KSI F TU . PRECIPITATION HARDENING PER AMS5853 OR AMS2759. /12/
TITANIUM (6AL-4V)
− 160 KSI F TU MIN
FINISH:
CRES − PASSIVATE IN ACCORDANCE WITH AMS2700, METHOD 1, CLASS 4 OR CADMIUM PLATE PER AMS-QQ-P-416, TYPE II, CLASS 2
TITANIUM ALLOY − NONE OR OPTIONAL ALUMINUM PIGMENTED COATING PER NAS4006 WITH CETYL ALCOHOL LUBRICANT PER AS87132, TYPE III, GRADE B.
CODE:
BASIC PART NUMBER = SCREW, 130° FLUSH HEAD, NAS1800 SIX LOBE RECESS.
MATERIAL CODE AFTER BASIC PART NUMBER:
ADD “E” FOR CRES.
ADD “V” FOR TITANIUM.
DIAMETER DASH NUMBER DESIGNATES DIAMETER AND THREAD.
FINISH CODE AFTER DIAMETER DASH NUMBER:
ADD “-” FOR PASSIVATION (CRES ONLY).
ADD “-” FOR BARE TITANIUM
ADD “A” FOR ALUMINUM PIGMENTED COATING WITH CETYL ALCOHOL (TITANIUM ONLY)
ADD “P” FOR CADMIUM PLATING (CRES ONLY)
GRIP DASH NUMBER DESIGNATES GRIP IN .0625 INCREMENTS. (SEE TABLE III)
EXAMPLE OF PART NUMBERS:
NAS5310E3-10 = SCREW, .1900-32 THREAD, PASSIVATED CRES, .625 GRIP.
NAS5310V5A15 = SCREW, .3125-24 THREAD, ALUMINUM PIGMENTED COATED TITANIUM,.938 GRIP.
NAS5310V5-15 = SCREW, .3125-24 THREAD, TITANIUM ALLOY, .938 GRIP.
NAS5310E3P10 = SCREW, .1900-32 THREAD, CADMIUM PLATED CRES, .625 GRIP.
NOTES:
/1/ CONCENTRICITY: CONICAL SURFACE OF HEAD AND “ØD” WITHIN .003 FIM. “ØD” AND THREAD PITCH DIAMETER WITHIN “Y” VALUES FIM. RECESS TO “ØD” WITHIN .016 FIM THRU .2500 SIZE;
WITHIN .024 FIM ABOVE .2500 SIZE.
/2/ SHANK STRAIGHTNESS: WITHIN “Z” VALUES FIM PER INCH OF LENGTH.
/3/ RECESS GAGING IN ACCORDANCE WITH NAS1800.
/4/ GRIP LENGTH: FROM TOP OF HEAD TO END OF FULL CYLINDRICAL PORTION OF SHANK.
/5/ SCREW RECESSES SHALL MEET THE TORQUE TEST REQUIREMENTS SPECIFIED HEREIN WHEN TESTED IN ACCORDANCE WITH THE APPLICABLE PROCUREMENT SPECIFICATION.
(6) REMOVE ALL BURRS AND SHARP EDGES.
/7/ FLUSHNESS GAGE PROTRUSION SHALL BE INSPECTED PER NAS9800 USING VALUES AS SPECIFIED HEREIN.
(8) SURFACE ROUGHNESS: “ØD”, UNDERSIDE OF HEAD, THREAD ROOT AND THREAD FLANKS 32 MICROINCHES Ra, ALL OTHER SURFACES 125 MICROINCHES Ra PER ASME B46.1.
/9/ THREADS IN ACCORDANCE WITH AS8879; MAX MAJOR DIA SHALL BE .001 BELOW MIN SHANK DIAMETER.
(10) DIMENSIONS ARE IN INCHES AND APPLY AFTER FINISH AND PRIOR TO THE APPLICATION OF LUBRICATION UNLESS OTHERWISE SPECIFIED.
(11) FOR CRES, MAGNETIC PERMEABILITY SHALL BE LESS THAN 2.0 (AIR = 1.0) FOR A FIELD STRENGTH H = 200 OERSTEDS USING A MAGNETIC PERMEABILITY INDICATOR PER ASTM A 342/A 342M, TEST METHOD 3.

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