GDT:Profile Multi-Single Segment FCF: Difference between revisions
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Created page with "{{Author Credit |author=Admin }} {{GDT Infobox |symbol=Profile Multi-Single Segment FCF |type=Profile |category=Multi-Segment |standard=ASME Y14.5 |author=Admin |datums=Optional; segments should not repeat the same datum set |modifiers=Dynamic profile, non-uniform, tangent, unequal, free state, ST where allowed |tolerance_zone=Multiple profile segments, each defining its own zone |image=<!-- TODO: add diagram file name --> |mistakes=Missing..." |
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|modifiers=Dynamic profile, non-uniform, tangent, unequal, free state, ST where allowed | |modifiers=Dynamic profile, non-uniform, tangent, unequal, free state, ST where allowed | ||
|tolerance_zone=Multiple profile segments, each defining its own zone | |tolerance_zone=Multiple profile segments, each defining its own zone | ||
|image= | |image=GDT-Profile-MSS-FCF.svg | ||
|mistakes=Missing true profile location; repeating datum sets; disallowed modifiers; applying profile to datum surfaces | |mistakes=Missing true profile location; repeating datum sets; disallowed modifiers; applying profile to datum surfaces | ||
|related=[[F4:Profile MSS Validation]] | |related=[[F4:Profile MSS Validation]] | ||
Latest revision as of 19:31, 15 January 2026
| Symbol | Profile Multi-Single Segment FCF |
|---|---|
| Type | Profile |
| Category | Multi-Segment |
| Standard | ASME Y14.5 |
| Author | Admin |
| Datums | Optional; segments should not repeat the same datum set |
| Modifiers | Dynamic profile, non-uniform, tangent, unequal, free state, ST where allowed |
| Tolerance zone | Multiple profile segments, each defining its own zone |
| Image | GDT-Profile-MSS-FCF.svg |
| Common mistakes | Missing true profile location; repeating datum sets; disallowed modifiers; applying profile to datum surfaces |
| Related | F4:Profile MSS Validation |
Summary
Profile MSS (multi-single segment) feature control frames apply multiple profile requirements to the same surface or pattern.
Definition
An MSS profile FCF contains two or more stacked profile segments. Each segment is a separate requirement and may reference different datum frames. The true profile must be located by basic or toleranced dimensions.
When to use it
Use profile MSS when a surface needs multiple profile requirements, such as different datum frames for functional checks.
Examples
Example: Profile MSS with different datum frames
Two profile segments that reference different datums for the same surface.
Common mistakes
- Not locating the true profile with basic or toleranced dimensions.
- Repeating the same datum reference set across segments.
- Applying the profile to a datum surface in an ambiguous way.
- Using prohibited modifiers such as diameter, MMC, or LMC.