Product Code:SAE MA1518
Title:Bolts, Screws and Nuts - External Wrenching, Metric Threads - Design Parameters For
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope: To fully define the following requirements for bolts with spline and hexagon heads of strength class up to but no including 1250 MPa: a. Head dimensions; b. Shank dimensions; c. Geometric control; d. Surface texture.This document is based on one class of thread after all processing, including coating or plating, has been completed as follows: tolerance class 4h6h.For particulars of thread, see AS1370. For thread runout and lead threads, see AS3062.To fully define the following requirements for nuts with spline, plain hexagon and castellated configurations of strength class up to and including 1100 MPa:a. Nut dimensions; b. Geometric control; c. Surface textureFor particulars of threads, see AS1370.This document is based on the following classes of internal threads after all processing, including coating or plating, has been completed:Tolerance class 4H6H for sizes up to and including 5 mmTolerance class 4H5H for size 6 mm and largerFor particulars of thread, see AS1370.

标准名称：	扩口式F型四通管接头
英文名称：	Cross F type flared tube
中标分类：	航空、航天 >> 航空器与航天器零部件 >> 管件、卡箍、密封件
替代情况：	HB 4-29-1999
发布部门：	国防科学技术工业委员会
发布日期：	2003-02-24
实施日期：	2003-02-24
首发日期：	1900-01-01
作废日期：	1900-01-01
主管部门：	中国航空综合技术研究所
提出单位：	中国航空工业第一集团公司
归口单位：	中国航空综合技术研究所
起草单位：	中国航空综合技术研究所、沈阳飞机设计研究所和西安飞机制造公司
起草人：	李俊昇、许广吉、孙忠志
出版日期：	1900-01-01
页数：	7页

本标准规定了F型四通管接头的结构和尺寸、技术要求。
本标准适用于工作压力不超过28MPa的扩口管路连接。

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