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 entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, 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 2001 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.
3、A.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-7161 FAX: (724) 776-0243TO PLACE A DOCUMENT ORDER: (724) 776-4970 FAX: (724) 776-0790400 Commonwealth Drive, Warrendale, PA 15096-0001AEROSPACE MATERIAL SPECIFICATIONAMS 3787/4AIssued APR 1986Revised ARP 1991Reaffirmed JAN 2001Superseding AMS 3787/4Thre
4、ad, Para-AramidIntermediate Modulus3350 yards per pound (6753 m/kg), 50 pounds force (222 N) Breaking Strength1. SCOPE:1.1 Form: This specification covers one weight and strength of para-aramid thread.1.2 Application: See AMS 3787.1.3 Classification: Para-aramid thread of not less than 3350 yards pe
5、r pound (6753 m/kg) with breaking strength not lower than 50 pounds force (222 N).2. APPLICABLE DOCUMENTS: See AMS 3787.3. TECHNICAL REQUIREMENTS: 3.1 Basic Specification: The complete requirements for procuring the thread described herein shall consist of this document and the latest issue of the b
6、asic specification, AMS 3787.3.2 Properties: Shall conform to the requirements of Table I.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-AMS 3787/4A SAE AMS 3787/4A- 2 -4. QUALITY ASSURANCE PROVISIONS
7、 See AMS 3787.5. PREPARATION FOR DELIVERY: See AMS 3787.6. ACKNOWLEDGMENT: See AMS 3787.7. REJECTIONS: See AMS 3787.8. NOTES: See AMS 3787.PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “P”Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networkin
8、g permitted without license from IHS-,-AMS 3787/4A SAE AMS 3787/4A- 3 -TABLE IProperty RequirementThread Size FFYarn Denier, nominal 400Ply 3Twist, turns per inch (25.4 mm)SinglesPly 8S4ZLength per Unit Weight, min 3350 yards per pound(6753 m/kg)Breaking Strength, min 50 pounds force(222 N)Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-
