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21003000 — ANTENNA

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21003000: ANTENNA.

The ANTENNA is a the manufacturer industrial component. Key specifications include overall_width: 300.0 MILLIMETERS NOMINAL MM, overall_height: 160.0 MILLIMETERS NOMINAL MM, overall_length: 500.0 MILLIMETERS NOMINAL MM, special_features: SHIELDED 500MHZ ANTENNA, UTILITY DETECTION, ROAD AND PAVEMENT SURVEYS, MHz, part_name_assigned_by_controlling_agency: MALA SHIELDED ANTENNA. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-168-5146, 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
21003000
NSN: 4820-01-168-5146
NIINs: 011685146, 016702328
FSC: 4820 — Valves, Nonpowered
CAGE: 0XWR4 — UNITED DYNAMICS, INC (USA)
SPECIFICATIONS
overall_width300.0 MILLIMETERS NOMINAL MM
overall_height160.0 MILLIMETERS NOMINAL MM
overall_length500.0 MILLIMETERS NOMINAL MM
special_featuresSHIELDED 500MHZ ANTENNA, UTILITY DETECTION, ROAD AND PAVEMENT SURVEYS, MHz
part_name_assigned_by_controlling_agencyMALA SHIELDED ANTENNA
NSN4820-01-168-5146
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21003000 · 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
01215146Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21003000?
21003000 is a ANTENNA.
What parts can replace 21003000?
There is 1 known substitute for 21003000: 01215146. Substitute compatibility should be verified for your specific system.
What is the NSN for 21003000?
21003000 is cataloged in the U.S. Government catalog under NSN 4820-01-168-5146. 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.