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2663881-6 — RESTRICTOR UNIT,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2663881-6: RESTRICTOR UNIT,FLUID FLOW.

The RESTRICTOR UNIT,FLUID FLOW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, pin_overall_diameter: 0.3750 INCHES NOMINAL IN, end_item_identification: HEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS); 2320-01-097-0260 HIAB CRANE (HEMTT). This part is cataloged in the U.S.

Government catalog under NSN 4730-01-221-1985, 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
2663881-6
NSN: 4730-01-221-1985
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 06848 — HONEYWELL INTERNATIONAL INC DIV AEROSPACE-SOUTH BEND (BENDIX DR) (USA)
SPECIFICATIONS
materialSTEEL OVERALL
pin_overall_diameter0.3750 INCHES NOMINAL IN
end_item_identificationHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS); 2320-01-097-0260 HIAB CRANE (HEMTT)
NSN4730-01-221-1985
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2663881-6 · 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
SUBSTITUTES & CROSS-REFERENCES 1
25326Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 2663881-6?
2663881-6 is a RESTRICTOR UNIT,FLUID FLOW.
What parts can replace 2663881-6?
There is 1 known substitute for 2663881-6: 25326. Substitute compatibility should be verified for your specific system.
What is the NSN for 2663881-6?
2663881-6 is cataloged in the U.S. Government catalog under NSN 4730-01-221-1985. 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.