SAE AS 4958A-2013 Performance Nut Self-Locking Castellated Prevailing Torque UNJ 16 Pitch Thread Form《UNJ 16齿节螺纹形状的有效力矩构造如城的自锁螺母性能》.pdf
《SAE AS 4958A-2013 Performance Nut Self-Locking Castellated Prevailing Torque UNJ 16 Pitch Thread Form《UNJ 16齿节螺纹形状的有效力矩构造如城的自锁螺母性能》.pdf》由会员分享,可在线阅读,更多相关《SAE AS 4958A-2013 Performance Nut Self-Locking Castellated Prevailing Torque UNJ 16 Pitch Thread Form《UNJ 16齿节螺纹形状的有效力矩构造如城的自锁螺母性能》.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
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 theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2013 SAE International All rights reserved. No part of this pub
3、lication may 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: +1 724-776-4970
4、(outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS4958AAEROSPACESTANDARDAS4958 REV. AIssued 1997-10 Reaffirmed 2001-10 Revised 2013-
5、10 Superseding AS4958 Performance, Nut, Self-Locking, Castellated, Prevailing Torque, UNJ 16 Pitch Thread Form RATIONALEAs a result of a five year review the documents has been updated to include the correct thread spec, changes and additions to referenced specifications. 1. SCOPE 1.1 Type This docu
6、ment covers all metal, castellated, self-locking nuts made from alloy steel of the types identified under the Unified Numbering System as UNS G41300 and UNS G43400. 1.2 Application Where self-locking nuts with UNJ 16 pitch thread form are required for use with standard AS8879 external threads. 2. RE
7、FERENCES 2.1 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 the event of confl
8、ict 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. 2.1.1 SAE Publications Available from SAE International, 400 Com
9、monwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AMS2411 Plating, Silver for High Temperature Applications AMS6370 Steel, Bars, Forgings, and Rings, 0.95Cr - 0.20Mo (0.28 - 0.33C) (SAE 4130) SAE INTERNATIONAL AS4958A Pag
10、e 2 of 8 AMS6371 Steel, Mechanical Tubing, 0.95Cr - 0.20Mo (0.28 - 0.33C) (SAE 4130) AMS6414 Steel, Bars, Forgings, and Tubing, 0.80Cr - 1.8Ni - 0.25Mo (0.38 - 0.43C) (SAE 4340) Vacuum Consumable Electrode Remelted AMS 6415 Steel, Bars, Forgings, and Tubing, 0.80Cr - 1.8Ni - 0.25Mo (0.38 - 0.43C) (S
11、AE 4340) AMS-H-6875 Heat Treatment of Steel Raw MaterialsAS478 Identification Marking Methods AS1310 Fastener Torque for Threaded Applications, Definitions of AS3071 Acceptance Criteria - Magnetic Particle, Fluorescent Penetrant, and Contrast Dye Penetrant Inspection AS8879 Screw Threads - UNJ Profi
12、le, Inch, Controlled Radius Root with Increased Minor Diameter 2.1.2 U.S. Government Publications Available from DLA Document Services, Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6396, http:/quicksearch.dla.mil/.MIL-PRF-7808 Lubricating Oil, Aircraft Turbine Engine,
13、Synthetic Base MIL-PRF-23699 Lubricating Oil, Aircraft Turbine Engine, Synthetic Base, Nato Code Number 0-156 2.1.3 ASME Publications Available from ASME, 22 Law Drive, P.O. Box 2900, Fairfield, NJ 07007-2900, Tel: 800-843-2763 (U.S./Canada), 001-800-843-2763 (Mexico), 973-882-1170 (outside North Am
14、erica), www.asme.org.ASME B46.1 Surface Texture (Surface Roughness, Waviness, and Lay) 2.1.4 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM E18 Standard Test Methods for Rockwell Hardne
15、ss of Metallic Materials ASTM D3951 Standard Practice for Commercial Packaging 2.2 Definitions PRODUCTION INSPECTION LOT: Shall be all finished parts of the same part number, made from a single heat of alloy, heat treated at the same time to the same specified condition, produced as one continuous r
16、un, and submitted for suppliers inspection at the same time. ROOM TEMPERATURE: Ambient temperature (68 F approximately). Refer to AS1310 for definitions related to fastener torque. SAE INTERNATIONAL AS4958A Page 3 of 8 2.3 Unit Symbols F degree, Fahrenheit lbf-in pound-force inch, torque HRC hardnes
17、s, Rockwell C scale 3. TECHNICAL REQUIREMENTS 3.1 Material Shall be alloy steel 4130 per AMS6370 or AMS6371, or alloy steel 4340 per AMS6414 or AMS6415 as specified on purchase order, unless otherwise specified on part drawing. 3.2 Construction Each nut shall be a self-contained unit including the s
18、elf-locking device. The locking device shall not operate by means of separate movement from the installation and shall not depend on pressure from the bearing surface for the locking action. The locking area shall be set to meet the locking torque requirements of Table 1, when used with UNJ 16 pitch
19、 external thread form per AS8879. TABLE 1 - LOCKING TORQUES NominalThread Size Class 3B MaximumPrevailingTorque lbf-in MinimumBreakaway Torque lbf-in1.5625-16 630 85 1.7500-16 690 100 2.0000-16 765 110 2.2500-16 825 120 2.5000-16 890 135 2.7500-16 950 145 3.0000-16 1000 155 3.2500-16 1015 165 3.5000
20、-16 1100 175 3.7500-16 1150 185 4.0000-16 1200 195 4.2500-16 1225 205 3.3 Threads Shall conform to AS8879 except in the thread locking area of the finished part. 3.3.1 Thread Perpendicularity Prior to thread locking development, the bearing surface shall be perpendicular to the thread pitch cylinder
21、 axis within the limits specified on the part drawing. Perpendicularity shall be determined by a method agreed upon by the purchaser and the vendor. The perpendicularity requirement shall apply to the bearing surface of the nut. The nuts to be inspected shall permit at least two turns of free engage
22、ment on the thread arbor. SAE INTERNATIONAL AS4958A Page 4 of 8 3.3.2 Plating Nuts shall be plated on the threads and bearing surface, other surfaces optional in accordance with AMS2411, unless otherwise specified on the part drawing. The plating thickness shall not be less than 0.0002 inch when mea
23、sured on the thread pitch diameter. 3.3.3 Plating Allowance Internal thread plating allowance shall be as specified in AS8879, unless otherwise specified on the part drawing. 3.4 Heat Treatment Nuts shall be heat treated in accordance with AMS-H-6875 so as to achieve a hardness as in 3.4.1. 3.4.1 Ha
24、rdness Hardness testing per ASTM E18. Unless otherwise specified on the part drawing, the hardness after heat treatment as in 3.4 shall be within the range of 28 to 38 HRC. 3.5 Nondestructive Testing As specified on part drawing or purchase order. Acceptance criteria per AS3071. 3.6 Performance Unle
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- SAEAS4958A2013PERFORMANCENUTSELFLOCKINGCASTELLATEDPREVAILINGTORQUEUNJ16PITCHTHREADFORMUNJ16 螺纹 形状 有效

链接地址:http://www.mydoc123.com/p-1024692.html