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4621K33 — 4621K33

✓ Government record, cited
MCMASTER-CARR SUPPLY CO · GATE VALVE
PRODUCT OVERVIEW

4621K33: 4621K33.

The 4621K33 is a MCMASTER-CARR SUPPLY CO industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-453-3137, 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
4621K33
NSN: 4820-01-453-3137
FSC: 4820 — Valves, Nonpowered
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
Part Number4621K33
ManufacturerMCMASTER-CARR SUPPLY CO
NSN4820-01-453-3137
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4621K33 · MCMASTER-CARR SUPPLY CO ⚠ 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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CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) ALL ENDS
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CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
OPERATING PRESSURE: 90.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
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NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
•
MAXIMUM OPERATING TEMP: 160.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MEDIA FOR WHICH DESIGNED: AIR FIRST RESPONSE
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
OPERATING PRESSURE90.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
MAXIMUM OPERATING TEMP160.0 FAHRENHEIT SINGLE RESPONSE DEGF
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDLIQUID SECOND RESPONSE
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
MATERIALCOPPER ALLOY BODY
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4621K33?
4621K33 is a 4621K33 manufactured by MCMASTER-CARR SUPPLY CO.
What is the NSN for 4621K33?
4621K33 is cataloged in the U.S. Government catalog under NSN 4820-01-453-3137. 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.