The standard provides specific formulae (found in Table 5 of the document) and attached tables to calculate the exact size of a limit gauge based on the workpiece's nominal size and tolerance grade. When dimensions reach five or more decimal places, they are rounded to four places according to . How to Access the JIS B 7420 PDF
The official English translation of is maintained and published by the Japanese Standards Association (JSA) . JIS B 7420:1997 - Accuris Standards Store
: Primarily used for cylindrical holes and shafts that satisfy the "conditions of envelope" (maximum material condition). Key Technical Specifications jis b 7420 pdf
: It covers various gauge forms, including: Plug Gauges : For inspecting internal hole diameters. Ring Gauges : For inspecting external shaft diameters. Snap (Gap) Gauges : For quick inspection of shafts. Determining Gauge Size
Plain limit gauges. Publication date 1997-03-31 Original language English. 120.70 EUR VAT included. 112.80 EUR VAT excluded. JIS B 7420:1997 Plain limit gauges - Intertek Inform The standard provides specific formulae (found in Table
: The standard defines how to determine if a part is acceptable. A GO gauge should pass through or over the workpiece, while a NOT GO gauge should not.
Plain limit gauges. standard by Japanese Industrial Standard / Japanese Standards Association , 01/01/1997. Accuris Standards Store JIS B 7420 - 1997-03-31 - DIN Media JIS B 7420:1997 - Accuris Standards Store :
: Applied to grades IT6 to IT16 as specified in JIS B 0401.