1、 AEROSPACE STANDARD (R) BOLT, CLUSTER FITTING, DOUBLE PORT FLARELESS AS21940 Copyright 2007 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,
2、 or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED 2000-09REAFFIRMED 2004-04REVISED 2007-11 THIRD AN
3、GLE PROJECTION CUSTODIAN: SAE G-3/G-3B REV. A FEDERAL SUPPLY CLASS4730 AS21940 SHEET 1 OF 3 REV. A PROCUREMENT SPECIFICATION: AS18280 /10/SAE TechnicalStandards Board Rules provide that: “This report is published by SAE toadvance thestate of technical andengineering sciences. Theuse of thisreportis
4、entirely voluntary, andits applicabilityandsuitability forany particularuse,including any patent infringement arising therefrom, is thesole responsibility oftheuser.” SAE reviews each technical report at least every five yearsat which time it may be reaffirmed, revised, orcancelled.SAE invites yourw
5、ritten commentsandsuggestions.RATIONALE THIS FITTING STANDARD IS REVISED TO INCLUDE PRI-QPL REQUIREMENTS, UPDATED THE WEIGHT VALUES IN TABLE AND MAINTAIN TO SUPPORT MILITARY AIRCRAFT CURRENTLY IN OPERATION. NOTICE THE INITIAL SAE PUBLICATION OF THIS DOCUMENT WAS TAKEN DIRECTLY FROM U.S MILITARY STAN
6、DARD MS21940D. THIS SAE STANDARD RETAINS THE SAME PART NUMBER ESTABLISHED BY THE ORIGINAL MILITARY DOCUMENT. FIGURE 1 - BOLT, CLUSTER FITTING, DOUBLE PORT, FLARELESS, DIMENSIONS AND CONFIGURATION TABLE 1A - BOLT, CLUSTER FITTING, DOUBLE PORT, FLARELESS, LOW FLOW, DIMENSIONS (A TO D) LOW FLOW SIZE DA
7、SH NO. TUBE OD THREAD S AS8879 THREAD T AS8879 A REF B C .062 D +.000 -.015 -3L .1875 .3750-24 UNJF-3A .4375-20 UNJF-3A 2.531 3.265 - .621 -4L .2500 .4375-20 UNJF-3A .4375-20 UNJF-3A 2.531 3.328 - .684 -5L .3125 .5000-20 UNJF-3A .4375-20 UNJF-3A 2.531 3.390 - .746 -6L .3750 .5625-18 UNJF-3A .4375-20
8、 UNJF-3A 2.531 3.437 .663 .871 -8L .5000 .7500-16 UNJF-3A .4375-20 UNJF-3A 2.531 3.530 .656 .996 INACTIVE PART /14/ Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AEROSPACE STANDARD (R) BOLT, CLUSTE
9、R FITTING, DOUBLE PORT FLARELESS AS21940 SHEET 2 OF 3 REV. A TABLE 1B - BOLT, CLUSTER FITTING, DOUBLE PORT, FLARELESS, LOW FLOW, DIMENSIONS (E TO H) H - HEX LOW FLOW SIZE DASH NO. TUBE OD THREAD S AS8879 THREAD T AS8879 E .062 F .003 MIN MAX WT LB EACH APPROX -3L .1875 .3750-24 UNJF-3A .4375-20 UNJF
10、-3A 2.568 .125 .621 .628 .061 -4L .2500 .4375-20 UNJF-3A .4375-20 UNJF-3A 2.653 .187 .684 .691 .062 -5L .3125 .5000-20 UNJF-3A .4375-20 UNJF-3A 2.715 .234 .746 .753 .069 -6L .3750 .5625-18 UNJF-3A .4375-20 UNJF-3A 2.725 .234 .871 .878 .076 -8L .5000 .7500-16 UNJF-3A .4375-20 UNJF-3A 2.780 .234 .996
11、1.003 .096 TABLE 2A - BOLT, CLUSTER FITTING, DOUBLE PORT, FLARELESS, HIGH FLOW, DIMENSIONS (A TO D) HIGH FLOW SIZE DASH NO. TUBE OD THREAD S AS8879 THREAD T AS8879 A REF B C .062 D +.000 -.015 -6H .3750 .5000-20 UNJF-3B .5625-18 UNJF-3B 2.969 3.875 - .871 -8H .5000 .5625-18 UNJF-3B .5625-18 UNJF-3B
12、2.969 3.875 - .996 -10H .6250 .7500-16 UNJF-3B .5625-18 UNJF-3B 2.969 3.875 .812 1.121 TABLE 2B - BOLT, CLUSTER FITTING, DOUBLE PORT, FLARELESS, HIGH FLOW, DIMENSIONS (E TO H) H - HEX HIGH FLOW SIZE DASH NO. TUBE OD THREAD S AS8879 THREAD T AS8879 E .062 F .003 MIN MAX WT LB EACH APPROX -6H .3750 .5
13、625-18 UNJF-3A .5625-18 UNJF-3A 3.162 .297 .871 .878 .164 -8H .5000 .7500-16 UNJF-3A .5625-18 UNJF-3A 3.218 .422 .996 1.003 .159 -10H .6250 .8750-14 UNJF-3A .5625-18 UNJF-3A 3.242 .422 1.321 1.328 .166 NOTES: 1. MATERIALS: ALUMINUM ALLOY 7075 SEE PROCUREMENT SPECIFICATION. 2. FINISH: SEE PROCUREMENT
14、 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. DIMENSIONS ARE IN INCHES. UNLESS OTHE
15、RWISE SPECIFIED TOLERANCES DECIMALS .010, ANGLES .5. 7. DIMENSIONING AND TOLERANCING IN ACCORDANCE WITH ASME Y14.5M-1994. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AEROSPACE STANDARD (R) BOLT,
16、CLUSTER FITTING, DOUBLE PORT FLARELESS AS21940 SHEET 3 OF 3 REV. A 8. PART NUMBERS: LETTERS “L” AND “H” IN PART NUMBERS INDICATE LOW FLOW AND HIGH FLOW RESPECTIVELY. CODE “W FOLLOWING BASIC PART NUMBER MS21940 SPECIFIES 7075 ALUMINUM ALLOY NO CODE LETTER FOR ALUMINUM ALLOY 2014/2024 ARE CANCELLED SU
17、PERSEDED BY CODE “W” 7075 ALUMINUM. 2014/2024 PARTS ARE NO LONGER AVAILABLE FOR PROCUREMENT AFTER 2006. EXAMPLES OF PART NUMBERS: MS21940W4L - BOLT, .2500 TUBING, LOW FLOW, 7075 ALUMINUM ALLOY MS21940W10H - BOLT, .8750 TUBING, HIGH FLOW, 7075 ALUMINUM ALLOY 9. SEE TABLE 3 FOR CANCELLED AND SUPERSEDE
18、D DOCUMENT AND PART NUMBERS. TABLE 3 - CANCELLED AND SUPERSEDED DOCUMENT AND PART NUMBERS CANCELLED DOCUMENT NUMBER PREVIOUS PART NUMBERS SUPERSEDINGDOCUMENT NUMBER RETAINING PART NUMBERS MS21940 MS21940-3L AS21940 MS21940W3L MS21940 MS21940W3L AS21940 MS21940W3LMS21940 MS21940-4L AS21940 MS21940W4L
19、 MS21940 MS21940W4L AS21940 MS21940W4LMS21940 MS21940-5L AS21940 MS21940W5L MS21940 MS21940W5L AS21940 MS21940W5LMS21940 MS21940-6L AS21940 MS21940W6L MS21940 MS21940W6L AS21940 MS21940W6LMS21940 MS21940-8L AS21940 MS21940W8L MS21940 MS21940W8L AS21940 MS21940W8LMS21940 MS21940-6H AS21940 MS21940W6H
20、 MS21940 MS21940W6H AS21940 MS21940W6H MS21940 MS21940-8H AS21940 MS21940W8H MS21940 MS21940W8H AS21940 MS21940W8H MS21940 MS21940-10H AS21940 MS21940W10H MS21940 MS21940W10H AS21940 MS21940W10H/10/ PROCUREMENT SPECIFICATION: AS18280 EXCEPT AS SPECIFIED ON THIS STANDARD. PRODUCT SUPPLIED TO THIS SPE
21、CIFICATION SHALL BE MANUFACTURED BY AN ACCREDITED MANUFACTURER AS LISTED IN THE PERFORMANCE REVIEW INSTITUTE (PRI) 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 (OPTION
22、AL). 13. IN THE EVENT OF A CONFLICT BETWEEN THE TEXT OF THIS STANDARD AND THE REFERENCED CITED HEREIN, THE TEXT OF THIS STANDARD SHALL TAKE PRECEDENCE. /14/ THESE PARTS ARE INACTIVATED FOR NEW DESIGN DATED 31 DECEMBER 1989. FOR NEW DESIGN, SEE STANDARD REDUCER FITTINGS. 15. THE CHANGE BAR ( l ) LOCA
23、TED 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 THE DOCUMENT. AN (R) SYMBOL TO THE LEFT OF THE DOCUMENT TITLE INDICATES A COMPLETE REVISION OF THE DOCUMENT. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
