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11643651 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

11643651: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 2.000 INCHES NOMINAL IN, material: STEEL, orifice_diameter: 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN, special_features: RECTANGULAR BLOCK SHAPE.INLET ANDOUTLET ORIFICES PERPENDICULAR TO EACH OTHER.CONTAINS TWO MOUNTING HOLES., thread_provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED, end_item_identification: M109A1 155MM SP HOWITZER MM. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-689-3404, 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
11643651
NSN: 4730-00-689-3404
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
length2.000 INCHES NOMINAL IN
materialSTEEL
orifice_diameter0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
special_featuresRECTANGULAR BLOCK SHAPE.INLET ANDOUTLET ORIFICES PERPENDICULAR TO EACH OTHER.CONTAINS TWO MOUNTING HOLES.
thread_provisionUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
end_item_identificationM109A1 155MM SP HOWITZER MM
NSN4730-00-689-3404
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 11643651 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LENGTH: 2.000 INCHES NOMINAL IN
•
THREAD PROVISION: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
•
MATERIAL: STEEL
•
ORIFICE DIAMETER: 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
LENGTH2.000 INCHES NOMINAL IN
THREAD PROVISIONUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
SPECIAL FEATURESRECTANGULAR BLOCK SHAPE.INLET ANDOUTLET ORIFICES PERPENDICULAR TO EACH OTHER.CONTAINS TWO MOUNTING HOLES.
END ITEM IDENTIFICATIONM109A1 155MM SP HOWITZER MM
MATERIALSTEEL
ORIFICE DIAMETER0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
4730006893404Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 11643651?
11643651 is a RESTRICTOR,FLUID FLOW.
What parts can replace 11643651?
There is 1 known substitute for 11643651: 4730006893404. Substitute compatibility should be verified for your specific system.
What is the NSN for 11643651?
11643651 is cataloged in the U.S. Government catalog under NSN 4730-00-689-3404. 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.