1、AEROSPACE STANDARD FITTING, LUBRICATION, HYDRAULIC, THROAT OR SURFACE CHECK, 1/8 PIPE THREADS, CORROSION RESISTANT STEEL, TYPE VIIIAS15721Copyright 2010 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or b
2、y any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.
3、sae.org ISSUED 2001-05REVISED 2010-03THIRD ANGLE PROJECTION CUSTODIAN: SAE G-3/G-3B REV.CFEDERAL SUPPLY CLASS 4730 AS15721SHEET 1 OF 3REV. CPROCUREMENT SPECIFICATION: /5/ AS35411SAE Technical Standards Board Rules provide that: “This report ispublishedby SAE toadvance thestate of technicalandenginee
4、ring 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 bereaffirmed, r
5、evised, orcancelled. SAE invites yourwrittencomments andsuggestions. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AS15721CRATIONALE REVISE AS15721 TO UPDATE TABLE 1 BY REMOVING THE WEIGHT OF STEEL COLUMN AND TO INCOPORATE OTHE
6、R EDITORIAL CHANGES FIGURE 1 - FITTING, STRAIGHT FIGURE 2 - FITTING, ELBOW AEROSPACE STANDARD AS15721SHEET 2 OF 3REV. CFITTING, LUBRICATION, HYDRAULIC, THROAT OR SURFACE CHECK, 1/8 PIPE THREADS, CORROSION RESISTANT STEEL, TYPE VIIIFIGURE 3 - FITTING, ELBOW, 90 TABLE 1 DIMENSIONS PARTNUMBER /17/ FIG.
7、 THREAD T /6/A.031 B/7/CMAXDMAXE.003 F5 G.062 AS15721-1 AS15721-2 AS15721-3 AS15721-4 AS15721-5 AS15721-6 1122331/8-27 1/8-27 1/8-27 1/8-27 1/8-27 1/8-27 .281.750.375.375.375.375.1875 .1875 .1875 .1875 .1875 .1875 .375.625.625.5621.250 1.094 1.062 1.312 .438.438.438.438.438.43830 65 90 105 .750 1.25
8、0 NOTES: 1. MATERIAL: CORROSION RESISTANT STEEL. SEE PROCUREMENT SPECIFICATION. 2. HEAT TREATMENT: NONE. 3. FINISH: CODE LETTER U - ZINC NICKEL PLATE, SEE PROCUREMENT SPECIFICATION. 4. IDENTIFICATION: MARK PER AS478 METHOD 35D MANUFACTURERS NAME, CAGE CODE OR TRADEMARK, AND PART NUMBER. /5/ PROCUREM
9、ENT 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 WITH THAT PART NUMBER. USERS OF THIS STANDARD ARE ADVISED TO CONTROL SOURCE APPROVA
10、L BY STANDARD PAGE SUPPLEMENT OR SIMILAR MEANS. AEROSPACE STANDARD AS15721SHEET 3 OF 3REV. CFITTING, LUBRICATION, HYDRAULIC, THROAT OR SURFACE CHECK, 1/8 PIPE THREADS, CORROSION RESISTANT STEEL, TYPE VIII/6/ PIPE THREAD SHALL BE MODIFIED (DRYSEAL) TAPER PIPE THREAD, NPTF, IN ACCORDANCE WITH FED-STD-
11、H28/8, SCREW THREAD STANDARDS FOR FEDERAL SERVICES, EXCEPT THAT LENGTH OF EFFECTIVE THREAD L2 IS SHORTENED BY ONE THREAD ON SMALL END AND ONE THREAD ON LARGE END. SMALL END OF THREAD SHALL GAGE FROM FLUSH TO MINUS ONE AND ONE-HALF TURNS FROM SMALL END OF DRYSEAL (NPTF-L1) THIN RING GAGE. WIDTH OF FL
12、AT ON THREAD CREST MAY BE .007 MAXIMUM. PIPE THREAD SHALL BE PTF-SPL SHORT FOR ALL DASH NUMBERS EXCEPT -1 SHALL BE PTF-SPL EXTRA SHORT IN ACCORDANCE WITH SAE J476. /7/ MINIMUM EFFECTIVE THREAD LENGTH. 8. SURFACE OR THROAT CHECK OPTIONAL. 9. FITTING END IN ACCORDANCE WITH AS15000, STYLE OPTIONAL. 10.
13、 INTENDED USE: THIS PART IS INTENDED FOR USE IN LUBRICATING CONNECTIONS AT PRESSURES TO 6000 psi. 11. THIS STANDARD IS A CONVERSION OF MILITARY STANDARD MS15721, FITTINGS, LUBRICATION (HYDRAULIC) THROAT OR SURFACE CHECK, 1/8 PIPE THREADS, CORROSION RESISTANT STEEL, TYPE VIII, AND IS NOT A WORD-FOR-W
14、ORD CONVERSION. 12. INTERPRETATION OF DRAWING PER ARP4296. 13. SURFACE TEXTURE: SYMBOLS PER ASME Y14.36M; REQUIREMENTS PER ASME B46.1. UNLESS OTHERWISE SPECIFIED, MACHINED SURFACES TO BE 125 in Ra. SURFACES OF HEX FLATS MAY BE 250 in Ra. 14. BREAK EDGES .003 TO .015 UNLESS OTHERWISE SPECIFIED. 15. D
15、IMENSIONING AND TOLERANCING: ASME Y14.5M-1994. 16. DIMENSIONS ARE IN INCHES. UNLESS OTHERWISE SPECIFIED, TOLERANCES: LINEAR DIMENSIONS .010, ANGULAR DIMENSIONS 0 DEGREES 30. 17. EXAMPLE OF PART NUMBER: AS15721 -1 U BASIC PART NUMBER SIZE FINISH (IF REQUIRED) 18. THIS SPECIFICATION HAS INTERNATIONAL
16、STANDARDIZATION AGREEMENT. SEE AS35411. 19. A CHANGE BAR (|) LOCATED IN THE LEFT MARGIN IS FOR THE CONVENIENCE OF THE USER 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 PUBLICATIONS NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY. 20. INVENTORIED PARTS CONFORMING TO THE PREVIOUS LETTER CHANGE MAY BE USED TO DEPLETION.
