1、_ 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 there
2、from, 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. Copyright 2007 SAE International All rights reserved. No part of this publication m
3、ay be reproduced, stored in a retrieval system or transmitted, in any form or by 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: 724-776-4970 (outside USA)
4、 Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org AS4724 AEROSPACE STANDARD Issued 2007-07 Studs and Inserts, Locked In, Self-Broaching Keys - Hole Dimensions and Installation Requirements RATIONALE There is a need for an installation specification to accompany the
5、standard part hardware. It can also be used for non standard parts when referenced 1. SCOPE 1.1 Type This specification establishes the procedure for installing hardened key types studs and inserts, eliminating the need for broaching key slots. It also defines the hole preparation necessary to insta
6、ll the studs and inserts. 2. APPLICABLE DOCUMENTS The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In th
7、e event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1 SAE Publications Available from SAE Internat
8、ional, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AS3543 Stud, Locked In, Key Locked, UNS S66286, 140 ksi/1200F, Lightweight, Self-Broaching Keys AS3544 Stud, Locked In, Key Locked, UNS S66286, 140 ksi/1200
9、F, Heavy-Duty, Self-Broaching Keys AS3545 Insert, Screw Thread, Self-Locking, Locked In, Key Locked, Heavy-Duty, Self-Broaching Keys, UNS S66286 AS3546 Insert, Screw Thread, Self-Locking, Locked In, Key Locked, Extra Heavy-Duty, Self-Broaching Keys, UNS S66286 AS3572 Insert, Screw Thread, Non-Lockin
10、g, Locked In, Key Locked, Heavy-Duty, Self-Broaching Keys, UNS S66286 AS3573 Insert, Screw Thread, Non-Locking, Locked In, Key Locked, Extra Heavy-Duty, Self-Broaching Keys, UNS S66286 SAE AS4724 - 2 - 2.2 U.S. Government Publications Available from the Document Automation and Production Service (DA
11、PS), Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6257, http:/assist.daps.dla.mil/quicksearch/. FED-STD-H28/2 Screw Thread Standard for Federal Services, Section 2, Unified Inch Screw Threads 3. REQUIREMENTS 3.1 Hole Preparation Holes shall be drilled and tapped to the
12、 dimensions shown in Figure 1 and Tables 1, 2, and 3, as applicable. 3.1.1 Applications The dimensions in Figure 1 shall be used to prepare holes for self-broaching key type studs and inserts conforming AS3502, AS3503, ASs3543, AS3544, AS3546, AS3572, and AS3573. These dimensions shall also be used
13、for other inserts or studs that have the same overall length and thread size. 3.2 Installation Procedure 3.2.1 Hole Preparation Prepare the hole in accordance with Figure 1 and Tables 1, 2, or 3 for the applicable thread size of the part and dash numbers. 3.2.2 Installation: Install the stud end or
14、insert to depth of 0.010 to 0.030 inches below the surface of the parent material. Drive the keys to complete installation to a depth of 0.005 minimum inches below surface. Keys may be driven in any manner that will avoid damage to the parent material. No portion of the keys shall protrude beyond bo
15、ttom of stud or insert when installed in a thru hole. SAE AS4724 - 3 - FIGURE 1 B A Allowable Thread Runout 100 - 80 Countersink T Thread per FED-STD-H28 Except Minor Dia A Mod C Min Thread Depth SAE AS4724 - 4 - TABLE 1 - INSERTS AS3502 AND AS3503 T Thread Class-2B AS3502 Dash Number Ref. AS3503 Da
16、sh Number Ref. A B +0.010 0.000 C AS3502 C AS3503 0.3125-18 UNC 01 0.271 - 0.276 0.323 0.24 0.3750-16 UNC 02 01 0.331 - 0.336 0.385 0.32 0.24 0.4375-14 UNC 03 02 0.396 - 0.401 0.447 0.36 0.32 0.5000-13 UNC 04 03 0.452 - 0.457 0.510 0.42 0.33 0.5625-12 UNC 05 04 0.515 - 0.521 0.572 0.46 0.39 0.6250-1
17、1 UNC 06 05 0.577 - 0.583 0.635 0.51 0.45 0.6875-11 UNS 07 06 0.640 - 0.646 0.700 0.65 0.51 0.8125-16 UN 07 0.765 - 0.771 0.822 0.58 1 - Surface roughness shall be no greater than 63 microinches in accordance with ASME B46.1. 2 - Break sharp edges 0.003 to 0.015 unless otherwise specified. 3 - Remov
18、e all burrs and sharp edges. TABLE 2 - STUDS AS3543 AND AS3544 T Thread Class-2B AS3543 Dash Number Ref. AS3544 Dash Number Ref. A B +0.010 0.000 C AS3543 C AS3544 0.3125-18 UNC 01 01 0.271 - 0.276 0.323 0.37 0.37 0.3750-16 UNC 02 02 0.331 - 0.336 0.385 0.43 0.37 0.4375-14 UNC 03 03 0.396 - 0.401 0.
19、447 0.50 0.43 0.5000-13 UNC 04 04 0.452 - 0.457 0.510 0.56 0.50 0.5625-12 UNC 05 05 0.515 - 0.521 0.572 0.62 0.56 0.6250-11 UNC 06 06 0.577 - 0.583 0.635 0.68 0.68 0.6875-11 UNS 07 0.640 - 0.646 0.700 0.75 0.8125-16 UN 08 0.765 - 0.771 0.822 0.94 0.8750-14 UNF 09 0.827 - 0.833 0.865 1.00 1 - Surface
20、 roughness shall be no greater than 63 microinches in accordance with ASME B46.1. 2 - Break sharp edges 0.003 to 0.015 unless otherwise specified. 3 - Remove all burrs and sharp edges. SAE AS4724 - 5 - TABLE 3 - INSERT AS3545, AS3546, AS3572 AND AS3573 T Thread Class-2B AS3545 AS3572 Dash Number Ref
21、. AS3546 AS3573 Dash Number Ref. A B +0.010 0.000 C AS3545 AS3572 C AS3546 AS3573 0.3750-16 UNC 01 0.331 - 0.336 0.385 0.37 0.4375-14 UNC 02 01 0.396 - 0.401 0.447 0.43 0.37 0.5000-13 UNC 03 02 0.452 - 0.457 0.510 0.50 0.44 0.5625-12 UNC 04 03 0.515 - 0.521 0.572 0.56 0.50 0.6250-11 UNC 05 04 0.577
22、- 0.583 0.635 0.68 0.56 0.6875-11 UNS 06 05 0.640 - 0.646 0.700 0.75 0.68 0.8125-16 UN 07 06 0.765 - 0.771 0.822 0.94 0.75 0.8750-14 UNF 08 07 0.827 - 0.833 0.885 1.00 0.94 1.0000-12 UNF 08 0.936 - 0.942 1.020 1.00 1.1250-12 UNF 09 1.061 - 1.067 1.145 1.31 1.1250-12 UNF 09L 1.061 - 1.067 1.145 1.44
23、1.2500-12 UNF 10 09 1.186 - 1.192 1.270 1.44 1.31 1.2500-12 UNF 10L 09L 1.186 - 1.192 1.270 1.56 1.44 1.3750-12 UNF 11 10 1.311 - 1.317 1.395 1.56 1.44 1.3750-12 UNF 11L 10L 1.311 - 1.317 1.395 1.68 1.56 1.5000-12 UNF 11 1.436 - 1.442 1.520 1.56 1.5000-12 UNF 11L 1.436 - 1.442 1.520 1.68 1 - Surface roughness shall be no greater than 63 microinches in accordance with ASME B46.1. 2 - Break sharp edges 0.003 to 0.015 unless otherwise specified. 3 - Remove all burrs and sharp edges. PREPARED BY SAE COMMITTEE E-25, GENERAL STANDARDS FOR AEROSPACE AND PROPULSION SYSTEMS
