1、AEROSPACE STANDARD FITTING, LUBRICATION, HYDRAULIC, THROAT OR SURFACE CHECK, .250-28 TAPER THREADS, CORROSION RESISTANT STEEL, TYPE VIIAS15720Copyright 2010 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form
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3、www.sae.org ISSUED 2001-05REVISED 2010-03THIRD ANGLE PROJECTION CUSTODIAN: SAE G-3/G-3B REV.CFEDERAL SUPPLY CLASS 4730 AS15720SHEET 1 OF 3REV. CPROCUREMENT SPECIFICATION: /5/ AS35411SAE Technical Standards Board Rules provide that: “This report ispublishedby SAE toadvance thestate of technicalandeng
4、ineering sciences. Theuse ofthis report is entirely voluntary, andits applicability and suitability forany particular use,including any patent infringement arising therefrom, isthe soleresponsibilityofthe user.”SAE reviews eachtechnicalreport at least every five years at which time itmay bereaffirme
5、d, revised, orcancelled. SAE invites yourwrittencomments andsuggestions. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AS15720CRATIONALE REVISE AS15720 TO UPDATE TABLE 1 BY REMOVING THE WEIGHT OF STEEL COLUMN, ADD FINISH TO PAR
6、T NUMBER, AND TO INCOPORATE OTHER EDITORIAL CHANGES FIGURE 1 - FITTING, STRAIGHT FIGURE 2 - FITTING, ELBOW AEROSPACE STANDARD AS15720SHEET 2 OF 3REV. CFITTING, LUBRICATION, HYDRAULIC, THROAT OR SURFACE CHECK, .250-28 TAPER THREADS, CORROSION RESISTANT STEEL, TYPE VIIBADCFBODY CONTOURS OPTIONALWITH M
7、ANUFACTURERSTHREAD T.036 MAX x 455/9/7/FIGURE 3 - FITTING, ELBOW, 90 TABLE 1 - DIMENSIONS PARTNUMBER /17/ FIG. THREAD T PER FED-STD-H28/2, /20/ A.031 B/6/CMAXD.062 E /8/ .003 F5 AS15720-1 AS15720-2 AS15720-3 123.250-28 UNS-2A .250-28 UNS-2A .250-28 UNS-2A .188.188.188.1094 .1094 .1094 .406.531.500.8
8、75.781.312.375.37545 90 NOTES: 1. MATERIAL: CORROSION RESISTANT STEEL. SEE PROCUREMENT SPECIFICATION. 2. HEAT TREATMENT: NONE. 3. FINISH: CODE LETTER U - ZINC NICKEL PLATING. OMIT CODE LETTER IF ZINC NICKEL PLATING IS NOT REQUIRED. SEE PROCUREMENT SPECIFICATION. 4. IDENTIFICATION: MARK PER AS478 MET
9、HOD 35D MANUFACTURERS NAME, CAGE CODE OR TRADEMARK, AND PART NUMBER. /5/ PROCUREMENT SPECIFICATION: AS35411 EXCEPT AS SPECIFIED ON THIS STANDARD. THE DRAWING AND ALL THE SPECIFIED DOCUMENTS DEFINE THE REQUIREMENTS FOR THE END PRODUCT. ALL THE REQUIREMENTS MUST BE MET IN ORDER TO IDENTIFY THE ITEM WI
10、TH THAT PART NUMBER. USERS OF THIS STANDARD ARE ADVISED TO CONTROL SOURCE APPROVAL BY STANDARD PAGE SUPPLEMENT OR SIMILAR MEANS. /6/ MINIMUM EFFECTIVE THREAD LENGTH. /7/ SURFACE OR THROAT CHECK OPTIONAL. /8/ “E” DIMENSION ALTERNATE FOR -2 AND -3: .438. /9/ FITTING END IN ACCORDANCE WITH AS15000, STY
11、LE OPTIONAL. AEROSPACE STANDARD AS15720SHEET 3 OF 3REV. CFITTING, LUBRICATION, HYDRAULIC, THROAT OR SURFACE CHECK, .250-28 TAPER THREADS, CORROSION RESISTANT STEEL, TYPE VII10. INTENDED USE: THIS PART IS INTENDED FOR USE IN LUBRICATING CONNECTIONS AT PRESSURES TO 6000 psi. 11. THIS STANDARD IS A CON
12、VERSION OF MILITARY STANDARD MS15720, FITTINGS, LUBRICATION (HYDRAULIC) THROAT OR SURFACE CHECK, 1/4-28 TAPER THREADS, CORROSION RESISTANT STEEL, TYPE VII, AND IS NOT A WORD-FOR-WORD CONVERSION. 12. INTERPRETATION OF DRAWING PER ARP4296. 13. SURFACE TEXTURE: SYMBOLS PER ASME Y14.36M; REQUIREMENTS PE
13、R ASME B46.1. UNLESS OTHERWISE SPECIFIED, MACHINED SURFACES TO BE 125 in Ra. SURFACES OF HEX FLATS MAY BE 250 in Ra. 14. DIMENSIONING AND TOLERANCING: ASME Y14.5M-1994. 15. DIMENSIONS ARE IN INCHES. UNLESS OTHERWISE SPECIFIED, TOLERANCES: LINEAR DIMENSIONS .010, ANGULAR DIMENSIONS 0 DEGREES 30. 16.
14、BREAK EDGES .003 TO .015 UNLESS OTHERWISE SPECIFIED. /17/ EXAMPLE OF PART NUMBER: AS15720 -1 U BASIC PART NUMBER SIZE FINISH (IF REQUIRED) 18. THIS SPECIFICATION HAS INTERNATIONAL STANDARDIZATION AGREEMENT. SEE AS35411. 19. A CHANGE BAR (|) LOCATED IN THE LEFT MARGIN IS FOR THE CONVENIENCE OF THE US
15、ER IN LOCATING AREAS WHERE TECHNICAL REVISIONS, NOT EDITORIAL CHANGES, HAVE BEEN MADE TO THE PREVIOUS ISSUE OF THIS DOCUMENT. AN (R) SYMBOL TO THE LEFT OF THE DOCUMENT TITLE INDICATES A COMPLETE REVISION OF THE DOCUMENT, INCLUDING TECHNICAL REVISIONS. CHANGE BARS AND (R) ARE NOT USED IN ORIGINAL PUB
16、LICATIONS, NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY. /20/ 1/4 - 28 UNIFIED NATIONAL FORM OF THREAD WITH 3/4 in DIAMETER TAPER PER FOOT. BASIC PITCH DIAMETER AT SMALL END OF THREAD EQUALS 0.2224 TO 0.2257. FITTINGS SHALL BE SUITABLE FOR INSTALLATION TIGHTLY INTO 1/4 - 28 UNF - 3B THREADED HOLE. 21. INVENTORIED PARTS CONFORMING TO THE PREVIOUS LETTER CHANGE MAY BE USED TO DEPLETION.
