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810-4384538 — COUPLING ASSEMBLY,STEM

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

810-4384538: COUPLING ASSEMBLY,STEM.

The COUPLING ASSEMBLY,STEM is a the manufacturer industrial component. Key specifications include depth: 0.375 INCHES NOMINAL IN, diameter: 0.188 INCHES NOMINAL IN, material: NICKEL ALLOY, bore_shape: STRAIGHT, thread_size: 4.750-8, thread_class: 2A A. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-141-1290, 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
810-4384538
NSN: 4820-01-141-1290
NIINs: 011411290, 012151624, 012166833, 012167010, 012223391, 012366403
FSC: 4820 — Valves, Nonpowered
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
depth0.375 INCHES NOMINAL IN
diameter0.188 INCHES NOMINAL IN
materialNICKEL ALLOY
bore_shapeSTRAIGHT
thread_size4.750-8
thread_class2A A
bore_diameter3.793 INCHES MINIMUM AND 3.795 INCHES MAXIMUM IN
overall_length4.125 INCHES NOMINAL IN
inside_diameter2.906 INCHES NOMINAL IN
outside_diameter3.844 INCHES NOMINAL IN
thread_directionRIGHT-HAND
overall_thickness0.062 INCHES NOMINAL IN
NSN4820-01-141-1290
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 810-4384538 · 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
SUBSTITUTES & CROSS-REFERENCES 1
810-4384538 PC 137Same 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)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 810-4384538?
810-4384538 is a COUPLING ASSEMBLY,STEM.
What parts can replace 810-4384538?
There is 1 known substitute for 810-4384538: 810-4384538 PC 137. Substitute compatibility should be verified for your specific system.
What is the NSN for 810-4384538?
810-4384538 is cataloged in the U.S. Government catalog under NSN 4820-01-141-1290. 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.