1、AEROSPACE STANDARD BOLT, CLUSTER FITTING, SINGLE PORT FLARELESS AS21938Copyright 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 by any means, electronic, mechanical, photocopying, recording, or ot
2、herwise, 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.sae.org ISSUED 1997-08REVISED 2010-01 THIRD ANGLE PROJECTION CUSTOD
3、IAN: SAE G-3/G-3B REV.BFEDERAL SUPPLY CLASS 4730 AS21938SHEET 1 OF 3REV. BPROCUREMENT SPECIFICATION: /10/ AS18280SAE Technical Standards Board Rules provide that: “This report ispublishedby SAE toadvance thestate of technicalandengineering sciences. Theuse ofthis report is entirely voluntary, andits
4、 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, revised, orcancelled. SAE invites yourwrittencomments andsuggestio
5、ns. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AS21938BRATIONALE CORRECT FITTING END DESIGN STANDARD CALLOUT. ADDED REFERENCE DESIGNATION TO DIMENSIONS S AND T IN TABLES 1 AND 2 TO AGREE WITH FIGURE.NOTICE THE INITIAL SAE PU
6、BLICATION OF THIS DOCUMENT WAS TAKEN DIRECTLY FROM U.S MILITARY STANDARD MS21938D. THIS SAE STANDARD RETAINS THE SAME PART NUMBER ESTABLISHED BY THE ORIGINAL MILITARY DOCUMENT. HHEXE(A)CBFITTING END PERAS33514, STYLE EFOR TUBE SIZE SPECIFIEDFITTING END PERMS21932 FOR FLOWSIZE SPECIFIEDFTHREAD (T) TH
7、READ (S)155 CHAMFER TOD BOTH SIDESDFIGURE 1 - BOLT, CLUSTER FITTING, SINGLE PORT, FLARELESS, DIMENSIONS AND CONFIGURATION INACTIVE FOR NEW DESIGN /14/ AEROSPACE STANDARD AS21938SHEET 2 OF 3REV. BBOLT, CLUSTER FITTING, SINGLE PORT FLARELESS TABLE 1 - BOLT, CLUSTER FITTING, SINGLE PORT, FLARELESS, LOW
8、 FLOW, DIMENSIONS AND WEIGHTS LOWFLOW SIZEDASHNO. (NOMINAL TUBING SIZE)THREAD (S) PER AS8879 THREAD (T) PER AS8879 (A) B C.062 D+.000-.015 E.062 F.003 H WT LB/EAAPPROX-3L .1875 .3750-24 UNJF-3A .4375-20 UNJF-3A 1.438 2.172 - .621 1.568 .125 .621 - .628 .027 -4L .2500 .4375-20 UNJF-3A .4375-20 UNJF-3
9、A 1.438 2.235 - .684 1.653 .187 .684 - .691 .038 -5L .3125 .5000-20 UNJF-3A .4375-20 UNJF-3A 1.438 2.297 - .746 1.715 .234 .746 - .753 .047 -6L .3750 .5625-18 UNJF-3A .4375-20 UNJF-3A 1.438 2.344 .663 .871 1.750 .234 .871 - .878 .059 -8L .5000 .7500-16 UNJF-3A .4375-20 UNJF-3A 1.438 2.437 .656 .996
10、1.844 .234 .996 - 1.003 .132 TABLE 2 - BOLT, CLUSTER FITTING, SINGLE PORT, FLARELESS, HIGH FLOW, DIMENSIONS AND WEIGHTS HIGHFLOW SIZEDASHNO. (NOMINAL TUBING SIZE)THREAD (S) PER AS8879 THREAD (T) PER AS8879 (A) B C.062 D+.000-.015 E.062 F.003 H WT LB/EAAPPROX-6H .3750 .5625-18 UNJF-3A .5625-18 UNJF-3
11、A 1.688 2.594 - .871 1.913 .297 .871 - .878 .098 -8H .5000 .7500-16 UNJF-3A .5625-18 UNJF-3A 1.688 2.687 - .996 2.030 .422 .995 - 1.003 .105 -10H .6250 .8750-14 UNJF-3A .5625-18 UNJF-3A 1.688 2.750 .812 1.121 2.055 .422 1.121 - 1.128 .111 NOTES: 1. MATERIAL: ALUMINUM ALLOY 7075 - SEE PROCUREMENT SPE
12、CIFICATION. 2. FINISH: SEE PROCUREMENT SPECIFICATION. 3. REMOVE BURRS AND SHARP EDGES. 4. INSTALLATION IN ACCORDANCE WITH MS21931. 5. SURFACE FINISH IN ACCORDANCE WITH ASME B46.1. UNLESS OTHERWISE SPECIFIED, ALL OUTSIDE MACHINED SURFACE SHALL BE 125 in Ra AND ALL INSIDE SURFACE SHALL BE 250 in Ra. 6
13、. DIMENSIONS ARE IN INCHES. UNLESS OTHERWISE SPECIFIED TOLERANCES DECIMALS .010, ANGLES .5. 7. DIMENSIONING AND TOLERANCING IN ACCORDANCE WITH ASME Y14.5M-1994. 8. PART NUMBERS: LETTERS “L“ AND “H“ IN PART NUMBERS INDICATE “LOW FLOW“ AND “HIGH FLOW“, RESPECTIVELY. CODE “W FOLLOWING BASIC PART NUMBER
14、 MS21938 INDICATES 7075 ALUMINUM ALLOY. NO CODE LETTER FOR ALUMINUM ALLOY 2014/2024 ARE CANCELLED SUPERSEDED BY CODE “W“ 7075 ALUMINUM. 2014/2024 PARTS ARE NO LONGER AVAILABLE FOR PROCUREMENT AFTER 2006. EXAMPLES OF PART NUMBERS: MS21938W4L - BOLT, .2500 TUBING, LOW FLOW, 7075 ALUMINUM ALLOY MS21938
15、W10H - BOLT, .6250 TUBING, HIGH FLOW, 7075 ALUMINUM ALLOY AEROSPACE STANDARD AS21938SHEET 3 OF 3REV. BBOLT, CLUSTER FITTING, SINGLE PORT FLARELESS 9. SEE TABLE 3 FOR CANCELLED AND SUPERSEDED DOCUMENT AND PART NUMBERS. TABLE 3 - CANCELLED AND SUPERSEDED DOCUMENT AND PART NUMBERS CANCELLEDDOCUMENT NUM
16、BER PREVIOUS PART NUMBERS SUPERSEDING DOCUMENT NUMBER RETAINING PART NUMBERS MS21938 MS21938-3L AS21938 MS21938W3L MS21938 MS21938W3L AS21938 MS21938W3LMS21938 MS21938-4L AS21938 MS21938W4L MS21938 MS21938W4L AS21938 MS21938W4LMS21938 MS21938-5L AS21938 MS21938W5L MS21938 MS21938W5L AS21938 MS21938W
17、5LMS21938 MS21938-6L AS21938 MS21938W6L MS21938 MS21938W6L AS21938 MS21938W6LMS21938 MS21938-8L AS21938 MS21938W8L MS21938 MS21938W8L AS21938 MS21938W8LMS21938 MS21938-6H AS21938 MS21938W6H MS21938 MS21938W6H AS21938 MS21938W6HMS21938 MS21938-8H AS21938 MS21938W8H MS21938 MS21938W8H AS21938 MS21938W
18、8HMS21938 MS21938-10H AS21938 MS21938W10H MS21938 MS21938W10H AS21938 MS21938W10H/10/ PROCUREMENT SPECIFICATION: AS18280 EXCEPT AS SPECIFIED ON THIS STANDARD. PRODUCT SUPPLIED TO THIS SPECIFICATION SHALL BE MANUFACTURED BY AN ACCREDITED MANUFACTURER AS LISTED IN THE PERFORMANCE REVIEW INSTITUTE (PRI
19、) QUALIFIED PRODUCTS LIST FOR PRI-QPL-AS18280 FOR THIS STANDARD. SEE FOR THE CURRENT QPL ONLINE. 11. INTERPRETATION OF DRAWING PER ARP4296. 12. FLUID PASSAGE HOLE CONTOUR ARP4266 (OPTIONAL). 13. IN THE EVENT OF A CONFLICT BETWEEN THE TEXT OF THIS STANDARD AND THE REFERENCED CITED HEREIN, THE TEXT O
20、F THIS STANDARD SHALL TAKE PRECEDENCE. /14/ THESE PARTS ARE INACTIVE FOR NEW DESIGN AS OF 31 DECEMBER 1990. FOR NEW DESIGN SEE STANDARD REDUCER FITTINGS. 15. A CHANGE BAR (I) 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 ARE NOT USED IN ORIGINAL PUBLICATIONS, NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY.
