1、 AEROSPACE STANDARD NUT, BULKHEAD, SHORT FLARELESS AS4678Copyright 2017 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 otherwise, witho
2、ut 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 ISSUED1992-07 REAFFIRMED2007-10 REVISED2017-06THIRD ANGLE PROJECTION CUST
3、ODIAN: G-3/G-3B REV.DFEDERAL SUPPLY CLASS 4730 AS4678 SHEET 1 OF 3 REV. D PROCUREMENT SPECIFICATION: AS18280 /5/ SAETechnicalStandardsBoard Rulesprovidethat:“Thisreportispublished bySAEto advance the state oftechnicaland engineering sciences.The use ofthisreportisentirelyvoluntary,anditsapplicabilit
4、yandsuitabilityforanyparticularuse,includinganypatentinfringementarising therefrom,isthe sole responsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhich time itmaybe revised,reaffirmed,stabilized,orcancelled.SAEinvitesyourwritten commentsandsuggestions.SAE values your input.
5、To provide feedback on this Technical Report, please visit http:/standards.sae.org/AS4678D RATIONALE ADDED CONDUCTIVE HIGH PURITY ALUMINUM COATING FOR ALUMINUM ALLOY FITTINGS. FIGURE 1 - NUT, BULKHEAD TABLE 1 - DIMENSIONS AND WEIGHTS BASIC NO. AS4678 /16/ SIZE CODE (NOMINAL TUBE SIZE) T THREAD PER A
6、S8879 B H K LB/EA APPROX REF ALUM LB/EA APPROX REF CRES LB/EA APPROX REF TI 20 1.250 1.5625-12 UNJ-3B 1.572 1.863-1.880 1.853 .0570 .158 .090 24 1.500 1.8125-12 UNJ-3B 1.822 2.109-2.135 2.099 .0671 .186 .106 28 1.750 2.1250-12 UNJ-3B 2.135 2.422-2.448 2.412 .0808 .224 .128 AEROSPACE STANDARD AS4678
7、SHEET 2 OF 3 REV. D NUT, BULKHEAD, SHORT FLARELESS NOTES NOTICE THIS DOCUMENT REFERENCES A PART WHICH CONTAINS CADMIUM AS A PLATING MATERIAL. CONSULT LOCAL OFFICIALS IF YOU HAVE QUESTIONS CONCERNING CADMIUMS USE. /1/ MATERIAL: a. CODE LETTER T - TYPE 6Al-4V TITANIUM ALLOY BAR PER AMS4928 b. CODE LET
8、TER V - TYPE 15-5PH CORROSION RESISTANT STEEL BAR PER AMS5659 c. CODE LETTER W - TYPE 7075-T7351 ALUMINUM ALLOY BAR PER AMS4124 OR TYPE 7075-T73 ALUMINUM ALLOY BAR PER AMS-QQ-A-225/9 2 HEAT TREATMENT: a. MATERIAL CODE LETTER T - NONE b. MATERIAL CODE LETTER V - HEAT TREAT TO CONDITION H-1075 PER AMS
9、2759/3 c. MATERIAL CODE LETTER W - NONE /3/ FINISH: a. MATERIAL CODE LETTER T - ANODIZE PER AMS2488 OR FLUORIDE PHOSPHATE CONVERSION COAT PER AMS2486. b. MATERIAL CODE LETTER V: (1) V CODE PARTS TO BE PASSIVATED ONLY WILL HAVE NO FINISH CODE LETTER AFTER THE SIZE CODE IN THE PART NUMBER. THE FINISH
10、WILL BE: PASSIVATE PER AMS2700 PER PROCUREMENT SPECIFICATION. (2) V CODE PARTS TO BE CADMIUM PLATED ONLY WILL HAVE THE FINISH CODE LETTER “P“ AFTER THE SIZE CODE IN THE PART NUMBER. THE FINISH WILL BE: CADMIUM PLATE PER AMS-QQ-P-416, TYPE II, CLASS 2. c. MATERIAL CODE LETTER W (1) W CODE PARTS TO BE
11、 ANODIZED ONLY WILL HAVE NO FINISH CODE LETTER AFTER THE SIZE CODE IN THE PART NUMBER. THE FINISH WILL BE ANODIZE PER AMS2472 OR PER MIL-A-8625, TYPE II, CLASS 2 DYED BROWN, SIMILAR TO COLOR 10080 OF AMS-STD-595. (2) W CODE PARTS TO BE COATED WITH HIGH PURITY ALUMINUM ONLY WILL HAVE THE FINISH CODE
12、LETTER “V” AFTER THE SIZE CODE IN THE PART NUMBER. SEE PROCUREMENT SPECIFICATION FOR REQUIREMENTS. /4/ IDENTIFICATION AT LOCATION SHOWN: MARK PER AS478 CLASS C OR D OR METHOD 7A3, 15A3, OR 15B. MANUFACTURERS NAME, TRADEMARK OR CAGE CODE, BASIC PART NUMBER, AND MATERIAL CODE LETTER. /5/ PROCUREMENT S
13、PECIFICATION: 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) QUALIFIED PRODUCTS LIST PRI-QPL-AS18280 FOR THIS STANDARD. SEE FOR CURRENT QPL ONLINE. NOTE: PRI
14、QPL LIMITATION - WITH REVISION C OF THIS STANDARD THE PROCUREMENT SPECIFICATION HAS BEEN CHANGED FROM AS4444 FOR 5000 PSI TO AS18280 FOR 3000 PSI. USERS OF THIS FITTING FOR 5000 PSI APPLICATIONS PER AS4444 ARE ADVISED TO CONTROL SOURCE APPROVAL BY STANDARD PAGE SUPPLEMENT OR SIMILAR MEANS. 6. INTEN
15、DED USE: THIS PART IS DESIGNED FOR USE WITH AS4659 FITTING ENDS WITH OR WITHOUT AN AS4679 WASHER IN TUBING CONNECTION SYSTEMS WITH NOMINAL OPERATING PRESSURES AS FOLLOWS: a. SIZES -20 AND -24 TITANIUM ALLOY AND CORROSION RESISTANT STEEL AT 3000 PSI. b. SIZE -28 TITANIUM ALLOY AND CORROSION RESISTANT
16、 STEEL AND SIZES -20, -24, AND -28 ALUMINUM ALLOY AT 600 PSI. AEROSPACE STANDARD AS4678 SHEET 3 OF 3 REV. D NUT, BULKHEAD, SHORT FLARELESS /7/ THE HEX CORNERS MAY BE ROUNDED PER ARP1942. /8/ FINISH CODE LETTER “P” SHALL BE PLACED AFTER SIZE CODES ONLY FOR MATERIAL CODE “V” PARTS THAT ARE TO BE CADMI
17、UM PLATED. FINISH CODE LETTER “V” SHALL BE PLACED AFTER SIZE CODES ONLY FOR MATERIAL CODE “W” PARTS THAT ARE TO BE COATED WITH HIGH PURITY ALUMINUM TO PROVIDE LOW ELECTRICAL CONTACT RESISTANCE. NO OTHER LETTERS ARE TO FOLLOW THE SIZE CODES. 9. REVISION INDICATOR: A CHANGE BAR (I) LOCATED IN THE LEFT
18、 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 B
19、ARS AND (R) ARE NOT USED IN ORIGINAL PUBLICATIONS, NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY. 10. INVENTORIED PARTS CONFORMING TO THE PREVIOUS “LETTER CHANGE“ MAY BE USED TO DEPLETION /5/. 11. INTERPRETATION OF DRAWING PER AS4296. 12. SURFACE TEXTURE: SYMBOLS PER ASME Y14.36M; REQUIREMENT
20、S PER ASME B46.1. UNLESS OTHERWISE SPECIFIED, MACHINED SURFACES TO BE 125 MICROINCHES Ra. 13. BREAK EDGES .003 TO .015, UNLESS OTHERWISE SPECIFIED. 14. DIMENSIONING AND TOLERANCING: ASME Y14.5M-1994. 15. DIMENSIONS ARE IN INCHES. UNLESS OTHERWISE SPECIFIED, TOLERANCES: LINEAR DIMENSIONS .010, ANGULAR DIMENSIONS 5. /16/ EXAMPLE OF PART NUMBER: AS4678 V 20 PBASIC PART NUMBER FINISH CODE LETTER /3/ /8/MATERIAL CODE LETTER /1/SIZE CODE, TUBE SIZEIN .062 INCREMENTS
