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Hi, Is there a standard (ASME, ISO, etc) describing the allowances required between a ring gauge and the shaft to be measured? I was looking at ISO 286 and ANSI B4.1, but they deal with the system of limits and fits in general. In considering the allowance required, should the geometric...

Hi, Is there a standard (ANSI, ISO, etc) describing the allowances required between a ring gauge and the shaft to be measured? I was looking at ISO 286 and ANSI B4.1, but they deal with the system of limits and fits in general. In considering the allowance required, should the geometric...

It's Ra. Sorin Seruna

Hi, We have to maintain an ISO spec of 20 uinch for the finish on a steel part .5" long, .062" diameter. We had lengthy discussions on the interpretation of this spec. When the steel exhibits minor surface porosity, the measurement is greatly influenced by the type of stylus used on the...

We have a similar application, drilling holes 0.5 to 1.5 mm diameter, on screw machines. We had tried a few suppliers. The best quality and price we found were the drills made by Guhring. They have a large selection of types and sizes. Check with your local distributor for a Guhring catalog...

We have to drill a 0.020" dia., 0.250" long hole in a 0.060" outside diameter brass rod. The final product overall length is 1". Everything is done on a high production screw machine, from 10-feet long rods. What is the best drill geometry, drill type for this application...