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4912K17 — 4912K17

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

4912K17: 4912K17.

The 4912K17 is a MCMASTER-CARR SUPPLY CO industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-453-8252, 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
4912K17
NSN: 4820-01-453-8252
FSC: 4820 — Valves, Nonpowered
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
Part Number4912K17
ManufacturerMCMASTER-CARR SUPPLY CO
NSN4820-01-453-8252
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4912K17 · 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
•
CONNECTION STYLE: SWIVEL NUT, INVERTED FLARE(TUBE) ALL ENDS
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CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
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STYLE DESIGNATOR: STRAIGHT THRU
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
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SEAT ANGLE: 12.5 DEGREES ALL ENDS
•
MATERIAL: STEEL CORROSION RESISTING BODY
TECHNICAL CHARACTERISTICS
CONNECTION STYLESWIVEL NUT, INVERTED FLARE(TUBE) ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
SEAT ANGLE12.5 DEGREES ALL ENDS
END ITEM IDENTIFICATIONSUPPORT EQUIPMENT (SE) B-2 BOMBER AIRCRAFT
MATERIALSTEEL CORROSION RESISTING BODY
THREAD SERIES DESIGNATORNPT ALL ENDS
VALVE OPERATION METHODMANUAL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 4912K17?
4912K17 is a 4912K17 manufactured by MCMASTER-CARR SUPPLY CO.
What is the NSN for 4912K17?
4912K17 is cataloged in the U.S. Government catalog under NSN 4820-01-453-8252. 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.