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45M-203 — RETAINER,VALVE STEM

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

45M-203: RETAINER,VALVE STEM.

The RETAINER,VALVE STEM is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: BRASS QQ-B-626. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-305-3277, 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
45M-203
NSN: 4820-01-305-3277
FSC: 4820 — Valves, Nonpowered
CAGE: 21013 — METREX VALVE CORP. DBA METREX VALVE CORP (USA)
SPECIFICATIONS
general_characteristics_item_descriptionBRASS QQ-B-626
NSN4820-01-305-3277
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 45M-203 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: BRASS QQ-B-626
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONBRASS QQ-B-626
SUBSTITUTES & CROSS-REFERENCES 2
NMV-5003H-60 ITEM 12Reference document
Same NSN cross-reference
Reference document — Secondary reference
NMV-5003H-60Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 45M-203?
45M-203 is a RETAINER,VALVE STEM.
What parts can replace 45M-203?
There are 2 known substitutes for 45M-203: NMV-5003H-60 ITEM 12, NMV-5003H-60. Substitute compatibility should be verified for your specific system.
What is the NSN for 45M-203?
45M-203 is cataloged in the U.S. Government catalog under NSN 4820-01-305-3277. 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.