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PartsTable / COMPONENT / 123A778
123A778 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The BREATHER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.310 INCHES NOMINAL IN, point_style: DOG, point_length: 0.750 INCHES NOMINAL IN, thread_class: 2A A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-00-358-3728, 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
123A778
NSN: 4310-00-358-3728
FSC: 4310
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.310 INCHES NOMINAL IN
point_styleDOG
point_length0.750 INCHES NOMINAL IN
thread_class2A A
thread_length1.250 INCHES NOMINAL IN
point_diameter0.187 INCHES NOMINAL IN
fastener_length2.810 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats0.500 INCHES NOMINAL IN
end_item_identificationBYRON JACKSON MAIN FEED PUMP MODEL 5X6X8-4STG DVMX
NSN4310-00-358-3728
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BREATHER TITLE COMPONENT PN 123A778 MFR BREATHER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
10186308Interchangeable
interchangeable cross-reference
interchangeable
2-259V1226-75Interchangeable
interchangeable cross-reference
interchangeable
S9413-259Interchangeable
interchangeable cross-reference
interchangeable
123778Interchangeable
interchangeable cross-reference
interchangeable
17868Interchangeable
interchangeable cross-reference
interchangeable
11259Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 123A778?
123A778 is a BREATHER.
What parts can replace 123A778?
There are 15 known substitutes for 123A778: 10186308, 2-259V1226-75, S9413-259 and 12 more. Substitute compatibility should be verified for your specific system.
Is 123A778 still available?
123A778 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