Product Code:SAE J2485
Title:Fastener Part Standard - Machine Screw Nuts (Metric and Inch)
Issuing Committee:Ship Systems - Fasteners Committee
Scope: This SAE Part Standard covers selected machine screw nuts manufactured in accordance with American Society for Mechanical Engineers dimensional standards. This document covers material most often used in ship systems and equipment but its use may be applied wherever fasteners of the covered materials are used. This document permits the fasteners to be identified and ordered by a part or identifying number (PIN) as defined in this document.PurposeThe purpose of this document is to assist the designer and other personnel in providing requirements and part identifying numbers for the most commonly used machine screw nuts. A part or identification number is normally required for all military applications and provides a useful means of communicating fastener requirements to suppliers and manufacturers in a very succinct manner.Machine Screw Nut Part NumbersThis document provides part or identifying numbers that can be used to identify machine screw nuts covered by this document. The part identification number (PIN) identifies the thread form, configuration (shape), nominal diameter, special features (plating and coatings), and fastener material.
Rationale: This SAE Part Standard covers selected machine screw nuts manufactured in accordance with American Society for Mechanical Engineers dimensional standards. This document covers material most often used in ship systems and equipment but its use may be applied wherever fasteners of the covered materials are used. This document permits the fasteners to be identified and ordered by a part or identifying number (PIN) as defined in this document.PurposeThe purpose of this document is to assist the designer and other personnel in providing requirements and part identifying numbers for the most commonly used machine screw nuts. A part or identification number is normally required for all military applications and provides a useful means of communicating fastener requirements to suppliers and manufacturers in a very succinct manner.Machine Screw Nut Part NumbersThis document provides part or identifying numbers that can be used to identify machine screw nuts covered by this document. The part identification number (PIN) identifies the thread form, configuration (shape), nominal diameter, special features (plating and coatings), and fastener material.

标准名称：	信息处理交换用七位和八位编码字符集在穿孔纸卡片上的表示方法
英文名称：	Implementation of 7-bit and 8-bit coded character sets for information processing interchange on punched paper cards
中标分类：	电子元器件与信息技术 >> 信息处理技术 >> 编码、字符集、字符识别
ICS分类：	信息技术、办公机械设备 >> 字符集和信息编码
发布部门：	国家标准局
发布日期：	1982-01-01
实施日期：	1983-08-01
首发日期：	1982-11-16
作废日期：	2005-10-14
主管部门：	国家标准化管理委员会
归口单位：	全国信息技术标准化技术委员会
起草单位：	电子工业部标准化所
出版日期：	1900-01-01
页数：	4页

本标准规定了GB 1988七位编码字符集及它的八位扩充在穿孔纸卡片上的表示方法。它适用于数据处理系统之间进行信息交换的80列12行穿孔纸卡片。本标准没有规定任何冗余校验码和差错控制技术。

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