AIA/NAS 72-2010 pdf download BUSHING, CLAMP-UP, STEEL, CHROME PLATED
MATERIAL:
ALLOY STEEL – 4130 (UNS G1300) PER MILS-6758 AMS-S-6758,OR 8630 (UNS G86300) PER MILS6050 AMS6280. SEAMLESS ALLOY STEEL TUBING MAY BE USED AS AN OPTIONAL MATERIALPROVIDED THE FINISHED PRODUCT MEETS ALL OTHER REQUIREMENTS OF THIS DRAWING
HEAT TREAT:
FINISH:
CODE:
125,000 – 145,000 PSI,TENSILE STRENGTH PER MH-H-6875 AMS-H-6875
CHROME PLATE OB AND ENDS IN ACCORDANCE WITH QO-G-320 AMS2460, CLASS 2. EXCEPT TO ASINGLE THICKNESS OF .0005 MINIMUM (.0010 MINIMUM ON OB).
SIZE DASH NUMBER DESIGNATES SIZE AS SHOWN IN TABLE I.LENGTH DASH NUMBER DESIGNATES LENGTH AS SHOWN IN TABLE IIFOR BUSHING LENGTHS .375 AND LONGER,LETTER “E” AFTER FIRST DASH NUMBER DESIGNATESBUSHING WITHOUT GROOVE
EXAMPLES OF PART NUMBER:
NAS72-8-012-BUSHING，.500 INSIDE DIAMETER X .760 LONG WITH GROOVENAS72-8E012=BUSHING，.500 INSIDE DIAMETER X 760 LONG WITHOUT GROOVE
NOTES:
BUSHINGS UNDER .375 IN LENGTH SHALL NOT BE GROOVED
2OA AND OB TO BE PARALLEL AND CONCENTRIC WITHIN .003 FULL INDICATOR MOVEMENT
3REMOVE ALL BURRS AND BREAK ALL SHARP EDGES .016.
THESE BUSHINGS NOT INTENDED FOR REAMING AT ASSEMBLY.(4)
THESE BUSHINGS ARE DESIGNED FOR CLAMPING TO THE SHAFT, WITH RELATIVE MOTION5)OCCURRING ON B ONLY.
6)DIMENSIONS IN INCHES AND APPLY AFTER FINISH UNLESS OTHERWISE SPECIFIED
REFERENCED DOCUMENTS SHALL BE THE ISSUE IN EFFECT ON DATE OF INVITATIONS FOR BID.
THIS STANDARD TAKES PRECEDENCE OVER DOCUMENTS REFERENCED HEREIN.8
(9)UNLESS OTHERWISE SPECIFIED, PART INVENTORY MANUFACTURED TO PREVIOUS REVISIONS OFTHE APPLICABLE DRAWING OR SPECIFICATION MAY BE PROCURED AND USED UNTIL STOCK ISDEPLETED.
TOLERANCES UNLESS OTHERWISE SPECIFIED: DECIMALS .010,ANGLES 5°(10)
SURFACE TEXTURE: “OB”: 63 MICROINCHES Ra: ALL OTHER SURFACES: 125 MICROINCHES Ra PER(1)ASME B46.1.

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