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6641189 — GEAR,SPUR

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

6641189: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: PLAIN, SOLID, bore_style: STRAIGHT SPLINE FIRST END, teeth_type: SPUR, pitch_height: 3.5400 INCHES NOMINAL IN, pitch_diameter: 8.6666 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-381-8126, 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
6641189
NSN: 4820-01-381-8126
NIINs: 013818126, 013835324, 013835443
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_stylePLAIN, SOLID
bore_styleSTRAIGHT SPLINE FIRST END
teeth_typeSPUR
pitch_height3.5400 INCHES NOMINAL IN
pitch_diameter8.6666 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity10
spline_quantity10 FIRST END
special_featuresVALVE SIZE 0.750IN. IN
style_designatorPROTRUDING HUBS
attachment_methodMOUNTING HOLE
NSN4820-01-381-8126
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6641189 · 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
•
FLOW CONTROL DEVICE: DISK
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
ADJUSTABLE PRESSURE RANGE: +200.0 TO 400.0 POUNDS PER SQUARE INCH LBS
•
MAXIMUM OPERATING TEMP: 160.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
ADJUSTABLE PRESSURE RANGE+200.0 TO 400.0 POUNDS PER SQUARE INCH LBS
MAXIMUM OPERATING TEMP160.0 FAHRENHEIT SINGLE RESPONSE DEGF
SPECIAL FEATURESVALVE SIZE 0.750IN. IN
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
VALVE OPERATION METHODAUTOMATIC
SUBSTITUTES & CROSS-REFERENCES 2
801-6641189FNB9Reference document
Same NSN cross-reference
Reference document — Secondary reference
801-6641189FNA9Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6641189?
6641189 is a GEAR,SPUR.
What parts can replace 6641189?
There are 2 known substitutes for 6641189: 801-6641189FNB9, 801-6641189FNA9. Substitute compatibility should be verified for your specific system.
What is the NSN for 6641189?
6641189 is cataloged in the U.S. Government catalog under NSN 4820-01-381-8126. 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.