This web page contains links to Mechanical Tolerance Design Manufacturing Calculators and Tables, GD&T, Geometric Dimensioning and Tolerancing calculators, Standard mechanical tolerances and other mechanical tolerance resources for design, engineering, manufacturing and quality.
The links contained on this page are tolerance charts that I use in my design activities. Please use with judgment, as
your particular design requirements may be less or more stringent.
Tolerance Charts |
Description |
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This Standard defines preferred limits and fits for press fits applications of non-threaded cylindrical features |
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This Calculator will determine the preferred size and limit tolerances for Running or sliding to interference-locational fits per ANSI B 4.1. |
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This Calculator will determine the preferred size and limit tolerances for a force or shrink fit per ANSI B 4.1. |
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This calculator will determine a variety of force, stress and other design parameters for press fit applications. |
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Positional & Limits of Size |
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International
Tolerance Grade Chart |
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Metric Mechanical Tolerance Preferred Size Data |
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Plus and minus tolerance for the specific ISO 286 hole tolerance data. |
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Plus and minus tolerance for the specific ISO 286 Shaft tolerance data. |
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The following are general geometrical tolerances per. ISO 2768 for the following: Linear Dimensions, External Radius and Chamfer Heights, Straightness and Flatness, Perpendicularity, Symmetry, Runout |
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Slip & Press fit design tolerances for ANSI size dowel pins. |
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Hole - Fastener Fits for ANSI Hex Head Blots and Screws. |
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Hole - Fastener Fits |
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General Tolerances Shaft - Holes Fits
Tolerance classes per ANSI ASME B4.1
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Fixed & Rotating, Class I, II, III, IV, V |
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Most extension springs are specified with initial tension, which is an internal force that holds the coils tightly together. |
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Torsional Spring wire-diameter tolerances, which are usually quite close, then govern the dimensional variations in body length and therefore in the spacing of the spring arms. |
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Hole - Fastener MEchanical Tolerance Fits Chart |
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Drill and Counterbore Sizes for Socket Head Cap Screws per. ASME B18.3 |
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Design for shaft-to-shaft alignment is the positioning of the rotational centers of two or more shafts so that the shafts are co-axial when the machine is in operation. The purpose of shaft alignment is to increase the operating life span of rotating machinery and to achieve high efficiency. |
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Dimensions of Go and No Go Gages for Spline Sockets per. ASME B18.3 |
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Dimensions of Go and No go Gages for Hexagon Sockets per. ASME B18.3 |
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Drilled hole mechanical tolerance capabilities data. |
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This calculator will determine the gage class and tolerance per ANSI ASME B89.1.5 for cylindrical I.D and O.D. gauges. |
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A treatise on the development of gaging systems for interchangeable manufacturing |
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During the rolling process the rollers bow slightly, which results in the sheet metal being thinner on the edges. |
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Accuracy Specification of Gauge Blocks by JIS B 7506-1997 Japan Specification. |
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Accuracy Specification for Gauge Blocks by BS 4311: Part 1: 1993 (UK) standard at 20??C. |
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The following table gives the Accuracy Specifications for Gage Blocks by ASME B89.1.9 (USA) at 20??C. |
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This table defines Ring gage and Master Disc mechanical tolerances per B89.1.5-1998 (R2009) |
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Table of tolerances for gauge blocks according to DIN 861, corresponds with ISO 3650 and SS 3348). |
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Gauge block calibration, application and history - 143 pages developed by industry standards organization NIST |
Onsite GD&T Training per ASME Y14.5-2009 and ISO 1101
Our trainer is certified per. ASME Y14.5 at the senior level GDTP
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| GD&T and Mechanical Tolerancing Books Related - Online |
Geometric Boundaries II, GD&T per. ASME Y 14.5-2009 |
Interpretation and Application of ASME Y14.5-2009 GD&T |
Geometric Boundaries Workbook Answers |
Access to Geometric Boundaries Workbook Questions |
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Geometric Boundaries, Interpretation and Application of GD&T per. ASME Y14.5M-1994 |
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Geometrical Boundaries, Interpretation and Application of G&T per. ISO 1101 |
Geometric Metrology per. ASME Y14.5-2009 |
Dimensional Tolerances Inspection & Practices in Manufacturing Fundamentals |
Limited Dimension Drawings LDD, Critical Feature Drawings |
Presentation and research for Limited Dimension Drawings LDD, Critical Feature Drawings |
Differences Between ASME Y14.5-2009 and ISO 1101 Geometric Dimensioning and Tolerancing |
Quick Guide to differences Between ASME Y14.5-2009 and ISO 1101 Geometric Dimensioning and Tolerancing |
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The ASME Y14.5-2018 standard is the only dimensioning and tolerancing guideline for the design language of geometric dimensioning and tolerancing (GD&T.) within the United States. |
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Gauge block calibration is one of the oldest high precision calibrations made in dimensional
metrology. Since their invention at the turn of the century gauge blocks have been the major
source of length standardization for industry. In most measurements of such enduring |
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The pitch diameter of a screw thread may be measured very accurately by means of some form of dial caliper or micrometer and three wires of equal diameter. |
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Overview of changes to the ASME Standard |
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Using random (not cluster) sampling. |
Dimensional Measurement Planning |
This resource requires a Premium Membership |
| GD&T Training Videos and Related Dimensioning and Tolerancing Applications |
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This tool will assist in design and selection of the correct geometric tolerances GD&T per ASME Y14.5-2009 |
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Dovetail slides that must be machined accurately to a given width are commonly gaged by using a gage pin.. |
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100 % interchangability and Six Sigma assembly and part tolerance analysis calculator. |
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Hole MMC Maximum Material Condition Tolerance Chart Calculator per .ASME Y14.5-2009, ASME Y14.5M - 1994, or ISO 1101 Geometric Dimensioning and Tolerancing (GD&T). |
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Shaft Diameter MMC Maximum Material Condition Tolerance Chart Calculator |
GD&T Training & Applications Videos |
GD&T and related training videos |
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This method is extensively used in checking the accuracy of threaded plug gages and other precision screw threads. |
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This video illustrates a parallelism application on an as-cast box requiring post machining. GD&T training |
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When RMB is applied to a geometric tolerance to multiple datum features of size to establish a single datum element(s), the datum feature simulator for each feature shall be at a fixed location and orientation relative to each other |
Position Tolerance Application Training Video
(Video Center Being Reworked)
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This GD&T Training video shows a design where the requirements are that a minimum position tolerance applies at the nominal size. As the feature of size diverges either towards LMS or MMC, the position tolerance is specified to increase from the nominal position tolerance. |
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This application video explores a couple of GD&T methods to refine the orientation of two hole features for a piston connecting rod. |
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GD&T Perpendicularity of Hole Application. Perpendicularity is the condition of a surface, axis, or line, which is 90 deg. from a datum plane or a datum axis. |
GD&T Cylindricity Engine Bore Application Video
(Video Center Being Reworked)
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GD&T Cylindricity Engine Piston Bore Application. Cylindricity describes a condition of a surface of revolution in which all points of a surface are equidistant from a common axis. |
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Circularity describes the condition on a surface of revolution (cylinder, cone, or sphere) where all points of the surface intersected
by any plane are... more |
| Straightness of Surface GD&T Training Application Video |
This video illustrates a Straightness of Surface Application on a cam follower wheel. |
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Flatness Gasket Application - This video discusses how to determine the right Flatness tolerance when a gasket is used between surfaces. GD&T Training |
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Circular Runout Surface Perpendicular to Datum Axis |
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Straightness of Axis Application - This video discusses how to determine the right straightness tolerance when the outer and inner tolerance boundaries are known. |
GD&T Related Tolerance Calculators, Tools,
Geometric Dimensioning Tolerancing Training Calculators |
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PLTZF tolerance applied at MMC , FRTZF tolerance applied at MMC, All dimensional unit applied with uniform units - all inches, mm, m, etc. , Datum applied at RFS, FRTZF datum is perpendicular to features , X and Y measurements taken with datum's established
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GD&T Composite Position Tolerance Calculator for Dimensional Inspection: External Feature of Size - post, tab, pipe, etc.. |
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This calculator calculates the as-measured Concentricity per. ASME Y14.5 - 2009, Dimensioning and Tolerancing Standard, also know as Geometric Dimensioning and Tolerancing (GD&T). |
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This calculator will determine the unknown variable of a floating fastener design condition using ASME Y14.5 - 2009 and ISO 1101 and derivative GD&T standards. |
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This calculator calculates fixed fastener position tolerances utilizing principles and concepts within ASMEY14.5-2009 and ASME Y14.5M - 1994, Geometric Dimensioning and Tolerancing (GD&T). |
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This tolerance calculator will calculate the required field compensating for the effects of the fastener projection. Calculations assume a line-line case at tolerance and feature-of-size maximum departure. Calculations are compliant with geometric dimensioning and tolerancing standards. |
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This calculator will calculate the position tolerances for two coaxial mating diameters. |
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This calculator will calculate the position tolerances for three coaxial mating diameters. |
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This calculator will convert coordinate measurements to position tolerances. Two inputs are required to determine the Geometric Tolerance. |
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This calculator will convert coordinate measurements to position tolerances for spherical applications. Three inputs are required. |
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This engineering calculator will determine the true and allowed position tolerance and graph the resulting data points. |
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For bolt circles that are too large to measure using typical methods or the measuring tools. Measuring or determining distances for a bolt circle geometry can be facilitated using the following equations and methods. |
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This calculator will determine the
even number of holes within a bolt circle. |
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Even Number of Holes Within Circle #2: To measure or determine the unknown distance "c" over adjacent hole or pins (largest gage pins that can fit into holes) within a bolt circle of holes (n or number of bolts holes must be even and greater than 4) |
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Odd Number of Holes in Circle : To measure the unknown distance x over semi-opposite holes using pins (largest gage pins that can fit into holes) and the number of holes n is odd and greater than 3, and the distance c between adjacent holes (pins) is known |
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Manufacturing, quality and measurement calculations and methods manual. Premium membership required. |
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This calculator will determine a bolt circle pattern and X Y coordinates as well as plot data. Bolt circle can be rotated as well. |
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This calculator will determine the Standard Deviation from a know set of measurements. |
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A Study of tolerance limits and fits for engineering purposes, with full tables of all recognized and published tolerance systems. |
Shaft Tolerance Classifications for Metric Radial Ball and Roller Bearings
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Shaft Tolerance Classifications for Metric Radial Ball and Roller Bearings of ABEC-1 and RBEC-1 Tolerance Classes ANSI/ABMA 7 |
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Housing Hole Tolerance Classifications for Metric Radial Ball and Roller Bearings of ABEC-1 and RBEC-1 Tolerance Classes |
