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264378505-A-5 — RETAINER,DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

264378505-A-5: RETAINER,DISK,VALVE.

The RETAINER,DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, overall_length: 0.424 INCHES NOMINAL IN, end_item_identification: SEAWOLF CLASS SSN, valve_design_control_activity: 53711, valve_size_for_which_designed: 3.000 INCHES IN, valve_model_number_for_which_designed: 6408988. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-377-9005, 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
264378505-A-5
NSN: 4820-01-377-9005
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_length0.424 INCHES NOMINAL IN
end_item_identificationSEAWOLF CLASS SSN
valve_design_control_activity53711
valve_size_for_which_designed3.000 INCHES IN
valve_model_number_for_which_designed6408988
NSN4820-01-377-9005
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 264378505-A-5 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 6408988
•
VALVE SIZE FOR WHICH DESIGNED: 3.000 INCHES IN
•
VALVE DESIGN CONTROL ACTIVITY: 53711
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
VALVE MODEL NUMBER FOR WHICH DESIGNED6408988
OVERALL LENGTH0.424 INCHES NOMINAL IN
VALVE SIZE FOR WHICH DESIGNED3.000 INCHES IN
VALVE DESIGN CONTROL ACTIVITY53711
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 3
6408988Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
2643-785-05Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
556-6408988-B-5Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 264378505-A-5?
264378505-A-5 is a RETAINER,DISK,VALVE.
What parts can replace 264378505-A-5?
There are 3 known substitutes for 264378505-A-5: 6408988, 2643-785-05, 556-6408988-B-5. Substitute compatibility should be verified for your specific system.
What is the NSN for 264378505-A-5?
264378505-A-5 is cataloged in the U.S. Government catalog under NSN 4820-01-377-9005. 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.