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P646 — CONNECTOR,RECEPTACLE,ELECTRICAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

P646: CONNECTOR,RECEPTACLE,ELECTRICAL.

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: ASBESTOS AND RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL, hole_diameter: 0.218 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 2.235 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN, style_designator: CIRCULAR, aperture_diameter: 1.500 INCHES NOMINAL IN, bolt_circle_diameter: 1.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-663-4818, 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
P646
NSN: 5330-00-663-4818
NIINs: 006634818, 015435879, 016307494
FSC: 5330 — Packing and Gasket Materials
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
materialASBESTOS AND RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
hole_diameter0.218 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter2.235 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
style_designatorCIRCULAR
aperture_diameter1.500 INCHES NOMINAL IN
bolt_hole_quantity6
bolt_circle_diameter1.875 INCHES NOMINAL IN
fsc_application_dataPUMP HYDRAULIC,AIRCRAFT
cross-sectional_thickness0.020 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-A-7021,CL 1 MIL SPEC ALL MATERIAL RESPONSES OVERALL
NSN5330-00-663-4818
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: P646 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FSC APPLICATION DATA: PUMP HYDRAULIC,AIRCRAFT
•
CROSS-SECTIONAL THICKNESS: 0.020 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-A-7021,CL 1 MIL SPEC ALL MATERIAL RESPONSES OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 2.235 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
•
APERTURE DIAMETER: 1.500 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 6
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAPUMP HYDRAULIC,AIRCRAFT
CROSS-SECTIONAL THICKNESS0.020 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-A-7021,CL 1 MIL SPEC ALL MATERIAL RESPONSES OVERALL
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER2.235 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
APERTURE DIAMETER1.500 INCHES NOMINAL IN
BOLT HOLE QUANTITY6
BOLT CIRCLE DIAMETER1.875 INCHES NOMINAL IN
MATERIALASBESTOS AND RUBBER NATURAL OR RUBBER SYNTHETIC OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
9083501-30Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is P646?
P646 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace P646?
There is 1 known substitute for P646: 9083501-30. Substitute compatibility should be verified for your specific system.
What is the NSN for P646?
P646 is cataloged in the U.S. Government catalog under NSN 5330-00-663-4818. 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.