Engineering Design Data: Menu - mechanical-tolerances

 
Mechanical Tolerances
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Measuring Pitch Diameters using Three Wire Method
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.
Measuring and Designing Dovetail Slides
Dovetail slides that must be machined accurately to a given width are commonly gaged by using a gage pin of known diameter and measured as indicated by the dimensions x and y
Drill and Counterbore Sizes for Socket Head Cap Screws per. ASME B18.3
Drill and Counterbore Sizes for Socket Head Cap Screws per. ASME B18.3
Composite Position Tolerance Calculator GD&T for External FOS
GD&T Composite Position Tolerance Calculator for Dimensional Inspection: External Feature of Size - post, tab, pipe, etc...
Composite Position Tolerance GD&T Calculator for Internal FOS
GD&T Composite Position Tolerance Calculator for Dimensional Inspection
Rubber Molded Parts Mechanical Tolerances
There are four levels of dimensional tolerances that are used for molded rubber products. “A1” High Precision “A2” Precision “A3” Commercial “A4” Basic. The level selected should be based upon the need with the following guidelines.
Casting Tolerances per. NADCA and ISO
The North American Die Casting Association (NADCA) has standard specifications for setting high pressure die casting tolerances. There is also the international ISO standard series, which focuses on casting tolerances. This series replaces the former ISO 8062:1994. ISO 8062:1994 did not have specifications to high pressure die castings.
Gage Tolerance Calculator ASME B89.1.5 Pin and Ring Gauges
This calculator will determine the gage class and tolerance per ANSI ASME B89.1.5 for cylindrical I.D and O.D. gauges.
Ring gage and Master Disc Tolerances per B89.1.5
The table defines Ring gage and Master Disc mechanical tolerances per B89.1.5-1998 (R2009) Measurement of Plain External Diameters for Use as Master Discs or Cylindrical Plug Gages.
Gauge Blocks Tolerances Specifications Table DIN 861
Table of tolerances for gauge blocks according to DIN 861, corresponds with ISO 3650 and SS 3348). DIN 861 specifies the most important dimensional and quality characteristics of gauge blocks with a rectangular cross-section and a nominal length ln ranging from 0,5 to 1000 mm. The permissible deviations and tolerances are stated for four grades of accuracy, i.e. 00, 0, 1 and 2 and the calibration Grade K.
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