• Project / part: HMC-05PMMP-SF8001
• Manufacturer: Amphenol / Amphenol LTW
• MPN: HMC-05PMMP-SF8001
• Project description: Standard Circular Connector PANEL SCREW 2PIN M CONN M PIN
• Actual part type from datasheet/product page: NMEA 2000 Micro / M12 5-position male panel-mount circular receptacle, PCB 180°, front-fastened, screw-thread, metal non-shielded.
• Datasheet URL currently set in project: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/a61f8a7600f640a020a9c67c9aa880a1d06328b703831793d865ce83deb8adc3.pdf
• Official product page found: https://sc.amphenolltw.com/product-info/NMEA2000/NMEA2000.MicroScrew/HMC-05PMMP-SF8001.html
• Distributor-hosted official drawing found: https://www.mouser.com/datasheet/2/18/1/HMC-05PMMP-SF8001-1399702.pdf

• Five terminal components, designators/pin numbers 1, 2, 3, 4, 5.
• Pin Type is Unspecified on all five terminals.
• No Pin Description, Pin Group, or Section values are set.

• Pin count matches the datasheet/product page: OK.
• Numbered contacts 1 through 5 match the datasheet's available pin numbering: OK.
• Pin descriptions are missing: incomplete but not necessarily electrically wrong, because the Amphenol drawing only provides contact numbers and does not show a signal/color table.
• Pin Type Unspecified is acceptable for a connector, though Passive would generally be cleaner for ERC.
• The project description says 2PIN, which conflicts with the actual part being a 5-position connector. This is a metadata mismatch and should be corrected.

• Drill diameter Ø1.0 mm matches the drawing: OK.
• Geometry is consistent with four outer contacts on a Ø5.0 mm pitch circle plus one center contact, with the local pitch-circle center at pad 5: OK.
• Pad diameter 1.5 mm gives a 0.25 mm annular ring around a 1.0 mm drill. The datasheet did not explicitly state copper pad diameter; this is plausible but should be verified against the intended fabrication capability and connector mechanical stress.
• Footprint origin is offset from the contact-pattern center; this is not inherently wrong, but the placement origin should be intentional for panel alignment.
• Mechanical outline/courtyard is approximate and should be checked if this connector must align to an enclosure panel cutout.

Text
        4
        |
3 — 5 — 1
        |
        2

1. Project description mismatch: the description says 2PIN, but the part/datasheet is clearly 5 pins / 5 positions.
2. Missing symbol pin descriptions: terminals have no descriptions. Conservative descriptions could be Contact 1 through Contact 5; NMEA 2000 signal names should only be added if sourced/approved.
3. Pin Type could be improved: all pins are Unspecified; Passive would be cleaner for a connector.
4. Manufacturer property is broad: project property says Amphenol; official branding is Amphenol LTW. Not functionally wrong, but more specific would be better.
5. Footprint pad numbering orientation should be visually verified: the hole pitch/drill are OK, but front-view vs PCB-view mirroring is the critical verification risk.
6. Copper pad diameter not datasheet-confirmed: current 1.5 mm pad diameter is plausible but not directly specified in the readable drawing.
7. Mechanical/panel alignment not fully encoded: panel cutout and max panel thickness are confirmed but not represented as a dedicated keepout/cutout rule in the current footprint.

• Correct project description to remove 2PIN and describe it as a 5-position NMEA 2000 Micro/M12 male PCB panel receptacle.
• Add conservative Pin Descriptions: Contact 1 through Contact 5, or add sourced NMEA 2000 signal names only if the standard mapping is approved.
• Change connector Pin Type from Unspecified to Passive.
• Add/verify footprint documentation for the panel cutout: Ø15.40, 13.60 +0.10/0, max panel thickness 4.5 mm.
• Do one final visual check of PCB pad numbering against the drawing's PCB layout view before publishing or manufacturing.