PSTD-003

Pack: F_OVERLAY Severity: major

Fit-critical mating holes/shafts must have an ISO 286 fit designation

Rule Card

Field	Value
Pack	F_OVERLAY — Industry Overlay and Compliance
Title	Fit-critical mating holes/shafts must have an ISO 286 fit designation
Severity	major
Check logic	Deterministic
Applies to	Compliance overlay
Inputs required	drawing_notes
Fix template	Add ISO 286 fit callouts for each fit-critical pair (hole and shaft) and confirm nominal size range matches the ISO tables.

Short Description

Checks that fit-critical mating features are annotated with ISO 286 tolerance classes (e.g., H7/h6) rather than relying only on general tolerances.

When It Applies

This rule runs only when an overlay activates F_OVERLAY. It targets Compliance overlay.

Evidence Profile

Input	Category
drawing_notes	Drawing / Spec

References

Reference	Type	Title
REF-FIT-286	standard	ISO 286 (series) — ISO code system for tolerances on linear sizes (limits & fits; used for H7/m6-style fit designations)

Compiled Threshold Metadata

Field	Value
compiled_from	pilot_deep_research
source_rule_id	PILOTSTD-003
source_analysis_mode	drawing_spec
source_standard_clause	None
source_predicate	{'left': 'drawing.features_of_size.mating_without_fit_callout_count', 'op': '==', 'right': 0}
source_evaluator_hint	Requires upstream tagging of fit-critical mating pairs; if unavailable, treat as evidence_gap and request tagging.
source_pilot_sets	['SET_A_MECH_ROBOT']
source_evidence_quality	official_abstract
source_needs_manual_confirmation	True
source_inputs	['drawing.features_of_size.mating_without_fit_callout_count']
compiled_inputs	['drawing_notes']
unknown_source_inputs	[]
compile_status	executable_now

Sources

• D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\manifest.json
• D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\rule_library.json
• D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\references.json
• D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\process_classifier.json
• D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\overlays.json
• D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\roles.json
• D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\report_templates.json
• D:\02_Code\36_RapidDraft_DFMBenchmark_ExpertMode\server\dfm\ui_bindings.json