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PartsTable / COMPONENT / BM66402
BM66402 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The PLUG,VENT is a the manufacturer industrial component. Key specifications include length: 0.609 INCHES NOMINAL IN, material: COPPER ALLOY, thread_class: 2A A, thread_length: 0.312 INCHES NOMINAL IN, inside_diameter: 0.219 INCHES NOMINAL IN, vent_hole_shape: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-445-0680, 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
BM66402
NSN: 5340-00-445-0680
FSC: 5340
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
length0.609 INCHES NOMINAL IN
materialCOPPER ALLOY
thread_class2A A
thread_length0.312 INCHES NOMINAL IN
inside_diameter0.219 INCHES NOMINAL IN
vent_hole_shapeROUND
outside_diameter0.391 INCHES NOMINAL IN
vent_hole_diameter0.219 INCHES NOMINAL IN
vent_hole_quantity1
end_connection_typeTHREADED
refinement_device_typeFILTER DISK
refinement_medium_typeSTRAINING
NSN5340-00-445-0680
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BM66402 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
•
THREAD CLASS: 2A A
•
VENT HOLE QUANTITY: 1
•
REFINEMENT DEVICE TYPE: FILTER DISK
•
VENT HOLE SHAPE: ROUND
•
END CONNECTION TYPE: THREADED
•
LENGTH: 0.609 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.219 INCHES NOMINAL IN
•
THREAD LENGTH: 0.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
VENT HOLE QUANTITY1
REFINEMENT DEVICE TYPEFILTER DISK
VENT HOLE SHAPEROUND
END CONNECTION TYPETHREADED
LENGTH0.609 INCHES NOMINAL IN
INSIDE DIAMETER0.219 INCHES NOMINAL IN
THREAD LENGTH0.312 INCHES NOMINAL IN
VENT HOLE DIAMETER0.219 INCHES NOMINAL IN
OUTSIDE DIAMETER0.391 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
99600-99100Interchangeable
interchangeable cross-reference
interchangeable
101618Interchangeable
interchangeable cross-reference
interchangeable
B4M0170-148S10DXInterchangeable
interchangeable cross-reference
interchangeable
A160237Interchangeable
interchangeable cross-reference
interchangeable
21-374Interchangeable
interchangeable cross-reference
interchangeable
WE4390Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BM66402?
BM66402 is a PLUG,VENT.
What parts can replace BM66402?
There are 13 known substitutes for BM66402: 99600-99100, 101618, B4M0170-148S10DX and 10 more. Substitute compatibility should be verified for your specific system.
Is BM66402 still available?
BM66402 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026