标准名称：	照相级 4-羟基-6-甲基-1 3 3a 7-四氮茚(ST-1)
中标分类：	化工 >> 其他化工产品 >> 其他化工产品综合
替代情况：	转化为HG/T 3574-90
发布日期：
实施日期：	1990-10-01
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作废日期：
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Product Code:SAE J2484
Title:Fastener Part Standard--Machine Screws
Issuing Committee:Ship Systems - Fasteners Committee
Scope:This SAE Part Standard covers selected machine screws manufactured in accordance with American Society for Mechanical Engineers dimensional standards. This SAE standard 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 screws for ship systems and equipment. 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 Part NumbersThis document provides part or identifying numbers that can be used to identify machine screws covered by this document. The parts covered by this document are manufactured in accordance with materials and processes identified in standards issued by ASTM. The part identification number (PIN) identifies the thread form, type of head, type of drive, nominal diameter, special features (plating, locking elements), nominal length and fastener material.