Machining accuracy and tolerance requirements for precision turned parts and standoff screws can vary depending on the specific application and needs. The following are some examples of common machining accuracy and tolerance requirements:
1. Machining accuracy: Precision turned parts and rivet screws usually require high-precision machining to ensure the accuracy of their size and shape. Machining accuracy is usually measured in linear dimensions or angles, for example, a tolerance of a few microns or less over a certain dimensional range may be required.
2. Tolerance requirements: Tolerance refers to the allowable dimensional deviation range. The tolerance requirements for precision turned parts and standoff screws are usually determined according to their specific function and fit requirements. For example, smaller tolerances may be required for tighter fitting parts, while larger tolerances may be acceptable for general purpose parts.
3. Surface roughness: In addition to size and tolerance requirements, the surface roughness of precision turned parts and rivet screws is also important. Surface roughness can affect a part's tribological properties, corrosion resistance and appearance. Depending on specific application needs, specific surface finish requirements may be required.