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Technical Data Sheet
PartsTable / COMPONENT / 21829N
21829N ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

VALVE,LINEAR,DIRECTIONAL CONTROL. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, nut_height: 0.833 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-377-1800, 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
21829N
NSN: 4820-01-377-1800
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
nut_height0.833 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats1.394 INCHES MINIMUM AND 1.438 INCHES MAXIMUM IN
nominal_thread_size0.875 INCHES IN
bearing_surface_typeCHAMFERED
thread_pitch_diameters+0.8028 TO 0.8110 INCHES IN
end_item_identificationUSED ON NIMITZ CLASS CVN
thread_quantity_per_inch9
NSN4820-01-377-1800
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21829N · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
BODY MATERIAL: STEEL
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
•
END CONNECTION QUANTITY: 2
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZY
BODY MATERIALSTEEL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
END CONNECTION QUANTITY2
END ITEM IDENTIFICATIONVALVES,NONPOWERED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
ODONSX 3B6A5SLXInterchangeable
interchangeable cross-reference
interchangeable
DDONSX 3B6A5SLXInterchangeable
interchangeable cross-reference
interchangeable
22944NInterchangeable
interchangeable cross-reference
interchangeable
21829NInterchangeable
interchangeable cross-reference
interchangeable
0367952000LInterchangeable
interchangeable cross-reference
interchangeable
15536Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21829N?
21829N is a VALVE,LINEAR,DIRECTIONAL CONTROL.
What parts can replace 21829N?
There are 11 known substitutes for 21829N: ODONSX 3B6A5SLX, DDONSX 3B6A5SLX, 22944N and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21829N?
21829N is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-377-1800. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026