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M-639 — CONNECTOR,RECEPTACLE,ELECTRICAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

M-639: CONNECTOR,RECEPTACLE,ELECTRICAL.

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: STEEL OVERALL, overall_height: 1.625 INCHES NOMINAL IN, outside_diameter: 2.687 INCHES NOMINAL IN, special_features: SWITCH MOMENTARY, 12 VDC VDC, style_designator: TUBE TYPE, surface_treatment: PAINT OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 2590-00-414-5619, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
M-639
NSN: 2590-00-414-5619
NIINs: 004145619, 015403247
FSC: 2590 — Miscellaneous Vehicular Components
CAGE: U2621 — MARINE & INDUSTRIAL TRANSMISSIONS LTD (GBR)
SPECIFICATIONS
materialSTEEL OVERALL
overall_height1.625 INCHES NOMINAL IN
outside_diameter2.687 INCHES NOMINAL IN
special_featuresSWITCH MOMENTARY, 12 VDC VDC
style_designatorTUBE TYPE
surface_treatmentPAINT OVERALL
accommodation_typePLAIN END GRIPPING
system_for_which_designedNONPRESSURIZED
filler_neck_diameter_for_which_designed1.492 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyPUSH BUTTON SWITCH, N.C.
NSN2590-00-414-5619
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CONNECTOR,RECEPTACLE,ELECTRICAL TITLE COMPONENT PN M-639 MFR CONNECTOR,RECEPTACLE,E
KEY FEATURES
•
ACCOMMODATION TYPE: PLAIN END GRIPPING
•
STYLE DESIGNATOR: TUBE TYPE
•
FILLER NECK DIAMETER FOR WHICH DESIGNED: 1.492 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.687 INCHES NOMINAL IN
•
SYSTEM FOR WHICH DESIGNED: NONPRESSURIZED
•
SURFACE TREATMENT: PAINT OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.625 INCHES NOMINAL IN
ACCOMMODATION TYPEPLAIN END GRIPPING
STYLE DESIGNATORTUBE TYPE
FILLER NECK DIAMETER FOR WHICH DESIGNED1.492 INCHES NOMINAL IN
OUTSIDE DIAMETER2.687 INCHES NOMINAL IN
SYSTEM FOR WHICH DESIGNEDNONPRESSURIZED
SURFACE TREATMENTPAINT OVERALL
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
647Reference document
Same NSN cross-reference
Reference document — Secondary reference
S67Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M-639?
M-639 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace M-639?
There are 2 known substitutes for M-639: 647, S67. Substitute compatibility should be verified for your specific system.
What is the NSN for M-639?
M-639 is cataloged in the U.S. Government catalog under NSN 2590-00-414-5619. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.