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595-6404638 FIN — RETAINER,DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

595-6404638 FIN: RETAINER,DISK,VALVE.

The RETAINER,DISK,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, outside_diameter: 1.872 INCHES NOMINAL IN, special_features: 4 HOLES 0.188 IN. DIA, 1.000 IN.

HOLE CIRCLE IN. This part is cataloged in the U.S. Government catalog under NSN 4820-01-390-3629, 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
595-6404638 FIN
NSN: 4820-01-390-3629
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY
outside_diameter1.872 INCHES NOMINAL IN
special_features4 HOLES 0.188 IN. DIA, 1.000 IN. HOLE CIRCLE IN
NSN4820-01-390-3629
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 595-6404638 FIN · 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
•
OUTSIDE DIAMETER: 1.872 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER1.872 INCHES NOMINAL IN
SPECIAL FEATURES4 HOLES 0.188 IN. DIA, 1.000 IN. HOLE CIRCLE IN
MATERIALNICKEL ALLOY
SUBSTITUTES & CROSS-REFERENCES 1
211028763Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 595-6404638 FIN?
595-6404638 FIN is a RETAINER,DISK,VALVE.
What parts can replace 595-6404638 FIN?
There is 1 known substitute for 595-6404638 FIN: 211028763. Substitute compatibility should be verified for your specific system.
What is the NSN for 595-6404638 FIN?
595-6404638 FIN is cataloged in the U.S. Government catalog under NSN 4820-01-390-3629. 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.