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Global Standard Components","","NAAMS Global Standard Components的“Metric Drafting Standards”条款汇总了度量制工程图的关键规范，涵盖引言与定义、正投影制图方法、剖视/多视图的投影规则、材料与标注单位转换原则、转移与行程尺寸计量要求、紧固件选型（硬公制）、能源与力学量遵循现行标准，以及标注尺寸与公差的制定方法。同时给出制图比例、字高与说明文字尺寸、基准线与辅助线的识别标注、尺寸布置位置与编写要求，适用于工程制图一致性管理。",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/metric-drafting-standards-global-standard-components/663744/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/metric-drafting-standards-global-standard-components/663744.png","ImageObject",300,407,{"name":92,"@type":93},"Ben ","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":8},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"硬公制与软公制的定义是什么？","Question",{"text":112,"@type":113},"硬公制指以公制体系直接建立的毫米尺寸，不是由美国习惯单位换算得到。软公制指将既有美国习惯单位基础尺寸直接转换为毫米所得的尺寸。","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"工程图应采用哪种投影方式？",{"text":117,"@type":113},"所有图纸应在正交视图中采用三视角（third angle）投影方式绘制。剖视或视图投影到同页或其他页时，应垂直于切割或观察平面，并配合方向箭头与交叉引用注释。",{"name":119,"@type":110,"acceptedAnswer":120},"标注与公差、以及小于1.0的数字规则如何要求？",{"text":121,"@type":113},"尺寸标注与公差方法应按相关ANSI规范定义并配图执行。小于1.0的数在小数点前应使用零，例如0.5。","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},663744,1793231004,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":8,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},2336478951081,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","| DESIGN DRAWING STANDARDS AND TOLERANCES INDEX | TM | |  |\n| --- | --- | --- | --- |\n|  |  | | |\n|  |  | Assembly 05/29/15 |  |\n| PAGE DATE DESCRIPTION\u003Cbr>A-1 02/13/08 Design Drawing Standards and Tolerances Index\u003Cbr>A-2 09/07/99 Metric Drafting Standards\u003Cbr>A-3  02/13/08 Metric Drafting Standards\u003Cbr>A-4  04/06/06 Metric Drafting Standards\u003Cbr>A-5  05/29/15 Metric Drafting Standards\u003Cbr>A-6 03/01/96 Tolerance stickers\u003Cbr>A-7 09/07/99 Installation Torques for Metric Screws\u003Cbr>A-8–10 02/12/97 Bill Of Materials Instructions\u003Cbr>A-11–15 02/12/97 System B.O. M. Instructions\u003Cbr>A-16–18 02/12/97 Assembly Line B.O. M. Instructions\u003Cbr>A-19–20 09/01/00 Assembly Line B.O. M. Instructions\u003Cbr>A-21 02/12/97 Tool B.O. M. Instructions\u003Cbr>A-22 09/01/00 Tool B.O. M. Instructions\u003Cbr>A-23 02/12/97 Tool B.O. M. Instructions\u003Cbr>A-24–25 09/01/00 Tool B.O. M. Instructions\u003Cbr>A-26–27 02/12/97 Unit B.O. M. Instructions\u003Cbr>A-28–29 09/01/00 Unit B.O. M. Instructions\u003Cbr>A-30–33 02/12/97 Unit B.O. M. Instructions\u003Cbr>A-34 09/01/00 Unit B.O. M. Instructions\u003Cbr>A-35 02/12/97 B.O. M. Templates\u003Cbr>A-36 02/12/97 System B.O. M. Template\u003Cbr>A-37 09/15/00 Line B.O. M. Template\u003Cbr>A-38 09/15/00 Tool B.O. M. Template\u003Cbr>A-39 02/12/97 Unit B.O. M. Template |  |  |  |\n\n©1997 Auto/Steel Partnership [www.naamsstandards.org](www.naamsstandards.org) This document is Uncontrolled when printed. A-1  \n\n| METRIC DRAFTING\u003Cbr>STANDARDS | GLOBAL STANDARD COMPONENTS |  |\n| --- | --- | --- |\n|  | \u003Cbr>|  |\n|  | Assembly 09/07/99 |  |\n| 1. INTRODUCTION\u003Cbr>1. 1 These Metric Drafting Standards are an integral part of the NAAMS Global Standard Components, Assembly.\u003Cbr>2. DEFINITIONS\u003Cbr>2. 1 Hard Metric: A dimension in millimeters, established in metric and not a result of converting from U.S. customary units to equivalent metric.\u003Cbr>2.2 Soft Metric: A dimension in millimeters, resulting from directly converting an established U.S. customary base dimension.\u003Cbr>3. DRAWING PROJECTION\u003Cbr>3. 1 Current drafting practices pertaining to multiview and sectional view drawings are defined and illustrated in ANSI Y 14.5M-1994.\u003Cbr>3.2 All drawings should be drafted using third angle projection on orthographic views.\u003Cbr>3.3 When sections or views are projected on the same or on other sheets, they shall be projected and drawn perpendicular to the cutting or viewing plane.\u003Cbr>3.4 When sections or views are projected onto other sheets, directional arrows shall be shown and cross referencing notes added onto the respective view.\u003Cbr>4. CONSTRUCTION MATERIAL\u003Cbr>4. 1 When plate, tubing, angles, channels, etc. that are produced to U.S. customary units are specified, the cross section dimensions should be called out in U.S. customary units and the cut length in metric.\u003Cbr>5. TRANSFERS\u003Cbr>5. 1 Transfers within a tooling system shall have their construction dimensioned in metrics.\u003Cbr>5.2 Travel distance, both horizontal and vertical, shall be dimensioned in metrics, with equivalent U.S. customary setup dimensions to interface coordination points with plant facilities and plant equipment.\u003Cbr>6. FASTENERS\u003Cbr>6. 1 It is recommended that all tool builders and suppliers use only hard metric fasteners.\u003Cbr>6.2 All metric threads are assumed to be coarse unless otherwise specified.\u003Cbr>6.3 The preferred minimum screw size is M8, except for the attachment of commercial and standard items that have predetermined mounting holes.\u003Cbr>6.4 Fasteners for kits shall remain to their existing standard screw size.\u003Cbr>7. ENERGY, INERTIA, TORQUE, POWER AND WORK\u003Cbr>7. 1 These entities shall remain to current standards.\u003Cbr>7.2 For future U.S. customary / metric conversion, refer to the NAAMS Metric Equivalent Charts \\#1 & \\#2 .\u003Cbr>8. DIMENSIONING AND TOLERANCING\u003Cbr>8. 1 Dimensioning and tolerancing practices shall be as defined and illustrated in ANSI Specification \\#Y14 .3M-1994.\u003Cbr>8.2 A zero before the decimal point shall be used for a number less than 1.0 (Example 0 .5) . |  |  |\n|  |  | A |\n|  |  |  |\n\n©1997 Auto/Steel Partnership T","cbCaihIMQlqQQeyH","https://ap.wps.com/l/cbCaihIMQlqQQeyH","pdf",1084942,39,"English","# METRIC DRAFTING STANDARDS\n## 1. INTRODUCTION\n## 2. DEFINITIONS\n## 3. DRAWING PROJECTION\n## 4. CONSTRUCTION MATERIAL\n## 5. TRANSFERS\n## 6. FASTENERS\n## 7. ENERGY, INERTIA, TORQUE, POWER AND WORK\n## 8. DIMENSIONING AND TOLERANCING\n## 9. METRIC DRAWING SCALE\n## 10. LETTERING\n## 11. BODYLINES\n## 12. DIMENSION ARRANGEMENT\n## 13. COMMERCIAL COMPONENTS","[{\"question\":\"硬公制与软公制的定义是什么？\",\"answer\":\"硬公制指以公制体系直接建立的毫米尺寸，不是由美国习惯单位换算得到。软公制指将既有美国习惯单位基础尺寸直接转换为毫米所得的尺寸。\"},{\"question\":\"工程图应采用哪种投影方式？\",\"answer\":\"所有图纸应在正交视图中采用三视角（third angle）投影方式绘制。剖视或视图投影到同页或其他页时，应垂直于切割或观察平面，并配合方向箭头与交叉引用注释。\"},{\"question\":\"标注与公差、以及小于1.0的数字规则如何要求？\",\"answer\":\"尺寸标注与公差方法应按相关ANSI规范定义并配图执行。小于1.0的数在小数点前应使用零，例如0.5。\"}]","Metric Drafting Standards - Global Standard Components | PDF",98]