Tolerance Charts 
Description 

This Standard defines preferred limits and fits for press fits applications of nonthreaded cylindrical features 

This Calculator will determine the preferred size and limit tolerances for Running or sliding to interferencelocational fits per ANSI B 4.1. 

This Calculator will determine the preferred size and limit tolerances for a force or shrink fit per ANSI B 4.1. 

This calculator will determine a variety of force, stress and other design parameters for press fit applications. 

Positional & Limits of Size 

International Tolerances per. ISO 919 and ISO 286 1993 

International
Tolerance Grade Chart 

Metric Mechanical Tolerance Preferred Size Data 

Plus and minus tolerance for the specific ISO 286 hole tolerance data. 

Plus and minus tolerance for the specific ISO 286 Shaft tolerance data. 

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 

Slip & Press fit design tolerances for ANSI size dowel pins. 

Hole  Fastener Fits for ANSI Hex Head Blots and Screws. 

Hole  Fastener Fits 

General Tolerances Shaft  Holes Fits
Tolerance classes per ANSI ASME B4.1

Fixed & Rotating, Class I, II, III, IV, V 

Most extension springs are specified with initial tension, which is an internal force that holds the coils tightly together. 

Torsional Spring wirediameter tolerances, which are usually quite close, then govern the dimensional variations in body length and therefore in the spacing of the spring arms. 

Hole  Fastener MEchanical Tolerance Fits Chart 

Drill and Counterbore Sizes for Socket Head Cap Screws per. ASME B18.3 

Design for shafttoshaft alignment is the positioning of the rotational centers of two or more shafts so that the shafts are coaxial 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. 

Dimensions of Go and No Go Gages for Spline Sockets per. ASME B18.3 

Dimensions of Go and No go Gages for Hexagon Sockets per. ASME B18.3 

Drilled hole mechanical tolerance capabilities data. 

This calculator will determine the gage class and tolerance per ANSI ASME B89.1.5 for cylindrical I.D and O.D. gauges. 

A treatise on the development of gaging systems for interchangeable manufacturing 

During the rolling process the rollers bow slightly, which results in the sheet metal being thinner on the edges. 
Machining Tool Relief Grooves Dimensions and Tolerances 
Size, Dimensions and Tolerances for Machined Tool Relief Grooves.
Per industry standards DIN ISO 509 and IS 3428 

Accuracy Specification of Gauge Blocks by JIS B 75061997 Japan Specification. 

Accuracy Specification for Gauge Blocks by BS 4311: Part 1: 1993 (UK) standard at 20??C. 

The following table gives the Accuracy Specifications for Gage Blocks by ASME B89.1.9 (USA) at 20??C. 

This table defines Ring gage and Master Disc mechanical tolerances per B89.1.51998 (R2009) 

Table of tolerances for gauge blocks according to DIN 861, corresponds with ISO 3650 and SS 3348). 

Gauge block calibration, application and history  143 pages developed by industry standards organization NIST 
Onsite GD&T Training per ASME Y14.52009 and ISO 1101
Our trainer is certified per. ASME Y14.5 at the senior level GDTP

GD&T and Mechanical Tolerancing Books Related  Online 
Geometric Boundaries II, GD&T per. ASME Y 14.52009 
Interpretation and Application of ASME Y14.52009 GD&T 
Geometric Boundaries Workbook Answers 
Access to Geometric Boundaries Workbook Questions 

Geometric Boundaries, Interpretation and Application of GD&T per. ASME Y14.5M1994 

Geometrical Boundaries, Interpretation and Application of G&T per. ISO 1101 
Geometric Metrology per. ASME Y14.52009 
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 Y14.52009 and ISO 1101 Geometric Dimensioning and Tolerancing 
Quick Guide to differences Between ASME Y14.52009 and ISO 1101 Geometric Dimensioning and Tolerancing 

The ASME Y14.52018 standard is the only dimensioning and tolerancing guideline for the design language of geometric dimensioning and tolerancing (GD&T.) within the United States. 

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 

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. 

Overview of changes to the ASME Standard 

Using random (not cluster) sampling. 
Dimensional Measurement Planning 
This resource requires a Premium Membership 
GD&T Training Videos and Related Dimensioning and Tolerancing Applications 

This tool will assist in design and selection of the correct geometric tolerances GD&T per ASME Y14.52009 

Dovetail slides that must be machined accurately to a given width are commonly gaged by using a gage pin.. 

100 % interchangability and Six Sigma assembly and part tolerance analysis calculator. 

Hole MMC Maximum Material Condition Tolerance Chart Calculator per .ASME Y14.52009, ASME Y14.5M  1994, or ISO 1101 Geometric Dimensioning and Tolerancing (GD&T). 

Shaft Diameter MMC Maximum Material Condition Tolerance Chart Calculator 
GD&T Training & Applications Videos 
GD&T and related training videos 

This method is extensively used in checking the accuracy of threaded plug gages and other precision screw threads. 

This video illustrates a parallelism application on an ascast box requiring post machining. GD&T training 

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)

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. 

This application video explores a couple of GD&T methods to refine the orientation of two hole features for a piston connecting rod. 

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)

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. 

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. 

Flatness Gasket Application  This video discusses how to determine the right Flatness tolerance when a gasket is used between surfaces. GD&T Training 

Circular Runout Surface Perpendicular to Datum Axis 

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 

The following are definitions commonly used throughout industry when discussing GD&T or composing engineering drawing notes. 

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


GD&T Composite Position Tolerance Calculator for Dimensional Inspection: External Feature of Size  post, tab, pipe, etc.. 

This calculator calculates the asmeasured Concentricity per. ASME Y14.5  2009, Dimensioning and Tolerancing Standard, also know as Geometric Dimensioning and Tolerancing (GD&T). 

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. 

This calculator calculates fixed fastener position tolerances utilizing principles and concepts within ASMEY14.52009 and ASME Y14.5M  1994, Geometric Dimensioning and Tolerancing (GD&T). 

This tolerance calculator will calculate the required field compensating for the effects of the fastener projection. Calculations assume a lineline case at tolerance and featureofsize maximum departure. Calculations are compliant with geometric dimensioning and tolerancing standards. 

This calculator will calculate the position tolerances for two coaxial mating diameters. 

This calculator will calculate the position tolerances for three coaxial mating diameters. 

This calculator will convert coordinate measurements to position tolerances. Two inputs are required to determine the Geometric Tolerance. 

This calculator will convert coordinate measurements to position tolerances for spherical applications. Three inputs are required. 

Sphericity is, naturally, a measure of how spherical an object is. Defined by Wadell in 1932, the sphericity ψ of a particle is the ratio of the surface area of a sphere with the same volume as the given spherical particle to the surface area of the particle. 

This engineering calculator will determine the true and allowed position tolerance and graph the resulting data points. 

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. 

This calculator will determine the
even number of holes within a bolt circle. 

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) 

Odd Number of Holes in Circle : To measure the unknown distance x over semiopposite 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 

Manufacturing, quality and measurement calculations and methods manual. Premium membership required. 

This calculator will determine a bolt circle pattern and X Y coordinates as well as plot data. Bolt circle can be rotated as well. 

This calculator will determine the Standard Deviation from a know set of measurements. 

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

Shaft Tolerance Classifications for Metric Radial Ball and Roller Bearings of ABEC1 and RBEC1 Tolerance Classes ANSI/ABMA 7 

Housing Hole Tolerance Classifications for Metric Radial Ball and Roller Bearings of ABEC1 and RBEC1 Tolerance Classes 

This engineering design calculator and related formulas will determine the nominal, maximum and minimum coupling gap. 

Notes: Projection within block material is fixed, Diameter D1 is typically MMC size. 

This calculator determines the maximum separation at two pin/bolt locations with an intermediate strap securing together. 

This spreadsheet allows the user to perform a complete Gage Repeatability and Reproducibility (GR&R) study. Both Analysis of Variance and Xbar/Range calculations are performed. Up to three operators, ten parts and three trials can be accommodated. The GR&R is reported in terms of percent of study variation and percent of tolerance. The percentage of equipment variation, appraiser variation, part variation, and the number of distinct categories that can be distinguished are also displayed. 

In all balancing problems, the product of the counterbalancing mass (or weight) and its radius are calculated; it is thus necessary to select either the mass or the radius and then calculate the other value from the product of the two quantities. 

Manufacturing fixtures rotating at a high speed require balancing. Often it is assumed that the center of gravity of the work piece and fixture and of the counterbalancing masses are in the same plane; however, this is not usually the case. Counterbalancing masses are required in two separate planes to prevent excessive vibration or bearing loads at high speeds. 

Mechanical Tolerances and Fit Terminology: When the radial interference (δ) and interface radius (R) is known, the interface pressure (p) can be calculated using equations provided on Thick Wall Cylinder Press or Shrink Fits Equations and Calculator ( Eq. 5) depending on whether the collar and shaft are made of the same material, and depending on whether the shaft is solid or hollow.
