SAE AS 21916D-2008

 RATIONALE 1. NOTE 10: NEW WORDING FOR PROCUREMENT NOTE. 2. WARNING NOTE ADDED FOR RESTRICTED MATERIAL. 3. THE 5 IN NOTE 5 AND TABLE 1 IS CHANGED TO /5/. 4. ERROR CORRECTIONS. 5. TOLERANCES FOR HEX E CHANGED TO COMPLY WITH ARP1201. FEDERAL SUPPLY CLASS 4730 E SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. FIGURE 1 - REDUCER, EXTERNAL THREAD, FLARELESS TUBE THIRD ANGLE PROJECTION CUSTODIAN: SAE G-3/G-3B PROCUREMENT SPECIFICATION: /10/ AS18280 AEROSPACE STANDARD REDUCER, EXTERNAL THREAD, FLARELESS TUBE A Copyright © 2008 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, Author:Gilligan-SID:9234-GUID:42021528-155.69.4.4recording, 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: CustomerService@sae.org SAE WEB ADDRESS: http://www.sae.org ISSUED 1998-03 REAFFIRMED 2007-07 REVISED 2008-06

DASH NO. /5/ -3-2 -4-2 -4-3

-5-4 -6-2 -6-3 -6-4 -6-5 -8-2

-8-3 -8-4 -8-5

-8-6 -10-4 -10-6

-10-8 -12-4 -12-5

-12-6 -12-8 -12-10

-16-4 -16-10 -16-12

-20-4 -20-12 -20-16

-24-16 -24-20

NOMINAL TUBE SIZE .188 .250 .250 .313 .375 .375 .375 .375 .500 .500 .500 .500 .500 .625 .625 .625 .750 .750 .750 .750 .750 1.000 1.000 1.000 1.250 1.250 1.250 1.500 1.500 NOMINAL TUBE T THREAD

AS8879 SIZE

.3750-24 UNJF-3A .125 .4375-20 UNJF-3A .125 .4375-20 UNJF-3A .188

.5000-20 UNJF-3A .250 .5625-18 UNJF-3A .125 .5625-18 UNJF-3A .188

.5625-18 UNJF-3A .250 .5625-18 UNJF-3A .313 .7500-16 UNJF-3A .125

.7500-16 UNJF-3A .188 .7500-16 UNJF-3A .250 .7500-16 UNJF-3A .313

.7500-16 UNJF-3A .375 .8750-14 UNJF-3A .250 .8750-14 UNJF-3A .375

.8750-14 UNJF-3A .500 1.0625-12 UNJ-3A .250 1.0625-12 UNJ-3A .313

1.0625-12 UNJ-3A .375 1.0625-12 UNJ-3A .500 1.0625-12 UNJ-3A .625

1.3125-12 UNJ-3A .250 1.3125-12 UNJ-3A .625 1.3125-12 UNJ-3A .750

1.6250-12 UNJ-3A .250 1.6250-12 UNJ-3A .750 1.6250-12 UNJ-3A 1.000

1.8750-12 UNJ-3A 1.000 1.8750-12 UNJ-3A 1.250

R THREAD

AS8879

.3125-24 UNJF-3A .3125-24 UNJF-3A .3750-24 UNJF-3A

.4375-20 UNJF-3A .3125-24 UNJF-3A .3750-24 UNJF-3A

.4375-20 UNJF-3A .5000-20 UNJF-3A .3125-24 UNJF-3A

.3750-24 UNJF-3A .4375-20 UNJF-3A .5000-20 UNJF-3A

.5625-18 UNJF-3A .4375-20 UNJF-3A .5625-18 UNJF-3A

.7500-16 UNJF-3A .4375-20 UNJF-3A .5000-20 UNJF-3A

.5625-18 UNJF-3A .7500-16 UNJF-3A .8750-14 UNJF-3A

.4375-20 UNJF-3A .8750-14 UNJF-3A 1.0625-12 UNJ-3A

.4375-20 UNJF-3A 1.0625-12 UNJ-3A 1.3125-12 UNJ-3A

1.3125-12 UNJ-3A 1.6250-12 UNJ-3A

E /4/ .625 .688 .688 .750 .813 .813 .813 .813 1.000 1.000 1.000 1.000 1.000 1.125 1.125 1.125 1.375 1.375 1.375 1.375 1.375 1.625 1.625 1.625 1.875 1.875 1.875 2.125 2.125

AEROSPACE STANDARD

REDUCER, EXTERNAL THREAD, FLARELESS TUBE

AS21916D SHEET 2 OF 5

Author:Gilligan-SID:9234-GUID:42021528-155.69.4.4

K DASH

±.010 S NO. AL TI DIA N ±.031 /5/ STEEL ALLOY ALLOY

-3-2 .611 1.047 .7 .036 .014 .020 -4-2 .674 1.094 .594 .042 .016 .024 -4-3 .674 1.141 .594 .046 .017 .026

-5-4 .736 1.156 .563 .065 .019 .037 -6-2 .799 1.156 .625 .066 .021 .038 -6-3 .799 1.203 .625 .067 .023 .038

-6-4 .799 1.219 .625 .068 .024 .039 -6-5 .799 1.219 .625 .070 .025 .040 -8-2 .985 1.250 .719 .101 .037 .058

-8-3 .985 1.297 .719 .108 .038 .062 -8-4 .985 1.344 .719 .115 .039 .066 -8-5 .985 1.344 .719 .118 .040 .068

-8-6 .985 1.344 .719 .120 .042 .069 -10-4 1.111 1.438 .781 .155 .053 .0 -10-6 1.111 1.625 .781 .204 .072 .117

-10-8 1.111 1.531 .781 .222 .081 .128 -12-4 1.361 1.531 .875 .230 .084 .132 -12-5 1.361 1.531 .875 .235 .086 .135

-12-6 1.361 1.531 .875 .240 .088 .138 -12-8 1.361 1.625 .844 .250 .090 .144 -12-10 1.361 1.688 .875 .260 .098 .150

-16-4 1.599 1.531 .688 .327 .120 .188 -16-10 1.599 1.688 .875 .335 .115 .193 -16-12 1.599 1.750 .875 .342 .122 .197

-20-4 1.849 1.531 .719 .439 .162 .253 -20-12 1.849 1.813 .906 .485 .172 .219 -20-16 1.849 1.750 .875 .450 .165 .259

-24-16 2.095 1.750 .875 .525 .193 .302 -24-20 2.095 1.750 .875 .570 .209 .328

NOTES:

NOTICE

THIS DOCUMENT REFERENCES A PART WHICH CONTAINS CADMIUM AS PLATING MATERIAL. CONSULT LOCAL OFFICIALS IF YOU

HAVE QUESTIONS CONCERNING CADMIUM’S USE. 1. MATERIAL:

SEE PROCUREMENT SPECIFICATION. ALLOY STEEL

ALUMINUM ALLOY

CORROSION RESISTANT STEEL TITANIUM ALLOY

FINISH: SEE PROCUREMENT SPECIFICATION.

2.

AEROSPACE STANDARD

REDUCER, EXTERNAL THREAD, FLARELESS TUBE

AS21916D SHEET 3 OF 5

Author:Gilligan-SID:9234-GUID:42021528-155.69.4.4

FOR CURRENT QPL ONLINE.

11. SURFACE TEXTURE: SYMBOLS PER ASME Y14.36M; REQUIREMENTS PER ASME B46.1; UNLESS OTHERWIE SPECIFIED

MACHINED SURFACES SHALL BE 125 Ra. 12. A CHANGE BAR ( l ) 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. 13. INTERPRETATION OF DRAWING PER ARP4296.

14. FLUID PASSAGE, HOLE CONTOUR: ARP4266 (OPTIONAL)

AEROSPACE STANDARD

REDUCER, EXTERNAL THREAD, FLARELESS TUBE

AS21916D SHEET 4 OF 5

Author:Gilligan-SID:9234-GUID:42021528-155.69.4.4

MS21916 MS21916

MS21916

MS21916 MS21916 MS21916

MS21916 MS21916 MS21916 MS21916-(3-2 THRU 24-20) MS21916C(3-2 THRU 24-20)

MS21916D(3-2 THRU 24-20)

MS21916W(3-2 THRU 24-20) MS21916J(3-2 THRU 24-20) MS21916K(3-2 THRU 24-20)

MS21916-(3-2 THRU 24-20)R MS21916-(3-2 THRU 24-20)S MS21916-(3-2 THRU 24-20)T /A/ /B/ /C/ NONE NONE NONE NONE /D/ NONE AS21916 AS21916

AS21916

AS21916 AS21916 AS21916

AS21916 AS21916 AS21916 MS21916V(3-2 THRU 24-20)P MS21916J(3-2 THRU 24-20), MS21916K(3-2 THRU 24-20), OR MS21916-(3-2 THRU 24-20)R MS21916W(3-2 THRU 24-20)

MS21916W(3-2 THRU 24-20) MS21916J(3-2 THRU 24-20) MS21916K(3-2 THRU 24-20)

MS21916-(3-2 THRU 24-20)R MS21916-(3-2 THRU 24-20)R MS21916-(3-2 THRU 24-20)T

/A/ PARTS CODED “-” FOR 4130 ALLOY STEEL ARE NOT TO BE MANUFACTURED. PARTS CODED “V(SIZE)P” FOR CORROSION

RESISTANT STEEL (15-5PH) WITH CADMIUM PLATE SHALL BE FURNISHED IN LIEU OF “-” CODED (4130) PARTS. PARTS CODED “-” FOR 4130 ALLOY STEEL MAY BE PROCURED UNTIL 12-31-06. /B/ PARTS CODED “C” FOR CORROSION RESISTANT STEEL (TYPE 303) ARE NOT TO BE MANUFACTURED. PARTS CODED “J”, “K” OR

“R” FOR CORROSION RESISTANT STEEL (TYPES 304, 316, OR 321, RESPECTIVELY) SHALL BE FURNISHED IN LIEU OF “C” CODED PARTS AT SUPPLIERS OPTION. /C/ PARTS CODED “D” FOR ALUMINUM ALLOY 2024 ARE NOT TO BE MANUFACTURED. PARTS CODED “W” FOR ALUMINUM ALLOY

7075 SHALL BE FURNISHED IN LIEU OF 2024 (D CODE) PARTS. PARTS CODED “D” FOR ALUMINUM ALLOY 2024 MAY BE PROCURED UNTIL 12-31-06. /D/ PARTS CODED “S” FOR CORROSION RESISTANT STEEL (TYPE 347) ARE NOT TO BE MANUFACTURED. PARTS CODED “S” MAY BE

USED UNTIL EXISTING STOCK IS DEPLETED. PARTS CODED “R” FOR CORROSION RESISTANT STEEL (TYPE 321) SHALL BE FURNISHED IN LIEU OF “S” CODED PARTS.

AEROSPACE STANDARD

REDUCER, EXTERNAL THREAD, FLARELESS TUBE

AS21916D SHEET 5 OF 5

Author:Gilligan-SID:9234-GUID:42021528-155.69.4.4