ASME B1.13M:2005 pdf download

12-17-2022 comment

ASME B1.13M:2005 pdf download Metric Screw Threads: M Profile
1.1Scope
This Standard contains general metric standards foa 60 deg symmetrical screw thread with a basic ISO 68-profile designated M profile. The M profile threads ottolerance class 6H/6g are intended for metric applications where inch class 2A/2B have been used. At theminimum material limits, the 6H/6g results in a looserfit than the 2A/2B. Tabular data is also provided for atighter tolerance fit external thread of class 4g6g, whichis approximately equivalent to the inch class 3A but withan allowance applied. Formulation and tolerancing datais included for applications requiring other fits.
NOTE: A 4H5H/4h6h is approximately equivalent to a class3A/3B fit in the inch system.
1.2 InterchangeabilityThreads produced to this Standard are fully interchangeable with threads conforming to other NationalStandards that are based on ISO 68-1 basic profile andISO 965-1 tolerance practices
121 Assembly.Threads produced in accordancewith M profile and M] profile (ASME B1.21M) desigrdata will assemble with each other. However, externaM] threads will encounter interference on the root radiiwith internal M thread crests when both threads are atmaximum material condition.
1.3 References
The latest issues of the following documents form apart of this Standard to the extent specified herein.ASME B1.3,Screw Thread Gaging Systems forDimensional Acceptability — Inch and Metric ScrewThreads(UN,UNR, UNJ, M, and M)ASME B1.7M,Nomenclature, Definitions, and LetterSymbols for Screw ThreadsASME B1.16M, Gages and Gaging for Metric M ScrewThreadsASME B1.21M,Metric Screw Threads: M ProfileASME B1.30,Screw Threads – Standard Practice forCalculating and Rounding Dimensions
ASME B47.1,Gage BlanksASME Y14.5, Dimensioning and TolerancingPublisher: The American Society of Mechanical Engineers (ASME),Three Park Avenue,New York,N)10016-5990;Order Department: 22 Law Drive,Box2900,Fairfield,N 07007-2900 ASTM F568M,Standard Specification for Carbon andAllov Steel Externally Threaded Metric FastenersPublisher: The American Society for Testing and Materials (ASTM),100 Barr Harbor Drive,West Conshohocken,PA 19428-2959
ISO 3,Preferred Numbers – Series of PreferredNumbersISO 68-1, ISO General Purpose Screw Threads – BasicProfile – Part 1: Metric Screw Threads
ISO 261, ISO General Purpose Metric Screw Threads 一General PlanISO 724ISO Metric Screw Threads – Basic DimensionsISO 898-1, Mechanical Properties of Fasteners – Part 1:Bolts, Screws, and StudsISO965-1ISO General Purpose Metric Screw Threads一Tolerances — Part 1: Principles and Basic DataPublisher: International Organization for Standardization (ISO).1 rue de Varembe,Case Postale 56CH-1211,Geneve 20,Switzerland/Suisse
SAEJ1199,Mechanical and Material Requirements forMetric Externally Threaded Steel FastenersPublisher: Societv of Automotive Engineers (SAE)400Commonwealth Drive,WarrendalePA 15096-0001
1.4 Acceptability
Acceptability of product threads shall be in accor-dance with ASME B1.3.Gages and gaging are in accordance with ASME B1.16M
1.5 Reference Temperature
The reference temperature is 20°C for dimensionsdefined by this system.
1.6 General Symbols
The general symbols used to describe the metric screwthread forms are shown in Table 1.
17 Units
All dimensions and all values in the formulas areexpressed in millimeters unless otherwise noted. Valuesin terms of sharp vee-thread height (height of fundamental triangle), H, are used to be consistent with ISO Stan-dards, but actual formulations and calculations arebased on values of pitch, P See Table 2.

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