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3-13840 — SHAFT ASSEMBLY,SHOULDERED

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

3-13840: SHAFT ASSEMBLY,SHOULDERED.

The SHAFT ASSEMBLY,SHOULDERED is a the manufacturer industrial component. Key specifications include end_item_identification: 3930-01-305-2111, nonsupply_items_and_quantities: PIN,1;SHAFT,1;MOUNTING ARM,1. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-534-7158, 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
3-13840
NSN: 4820-00-534-7158
NIINs: 005347158, 013395171
FSC: 4820 — Valves, Nonpowered
CAGE: 81982 — HYDRO-AIRE AEROSPACE CORP (USA)
SPECIFICATIONS
component_quantity3
end_item_identification3930-01-305-2111
nonsupply_items_and_quantitiesPIN,1;SHAFT,1;MOUNTING ARM,1
NSN4820-00-534-7158
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3-13840 · 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
•
FLOW CONTROL DEVICE: POPPET
•
CONNECTION STYLE: GASKET SEAL(BOSS) FIRST END
•
CONNECTION TYPE: THREADED INTERNAL BOSS FIRST END
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
FEATURES PROVIDED: PRESSURE TIGHT OUTLET SIDE
•
THREAD DIRECTION: RIGHT-HAND FIRST END
•
NOMINAL THREAD SIZE: 0.750 INCHES FIRST END IN
•
DISK LOADING METHOD: SPRING
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEPOPPET
CONNECTION STYLEGASKET SEAL(BOSS) FIRST END
CONNECTION TYPETHREADED INTERNAL BOSS FIRST END
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL THREAD SIZE0.750 INCHES FIRST END IN
DISK LOADING METHODSPRING
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
THREAD CLASS3B FIRST END
SUBSTITUTES & CROSS-REFERENCES 1
NA5-8231Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 3-13840?
3-13840 is a SHAFT ASSEMBLY,SHOULDERED.
What parts can replace 3-13840?
There is 1 known substitute for 3-13840: NA5-8231. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-13840?
3-13840 is cataloged in the U.S. Government catalog under NSN 4820-00-534-7158. 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.