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1166-1-B900 — RESTRICTOR UNIT,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1166-1-B900: RESTRICTOR UNIT,FLUID FLOW.

The RESTRICTOR UNIT,FLUID FLOW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 631 OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, inside_diameter: 0.920 INCHES NOMINAL IN, style_designator: CYLINDRICAL, spring_free_length: 2.326 INCHES NOMINAL IN, spring_solid_length: 0.488 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-810-6706, 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
1166-1-B900
NSN: 4730-00-810-6706
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 70236 — TACTAIR FLUID CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 631 OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
coil_quantity8
inside_diameter0.920 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length2.326 INCHES NOMINAL IN
spring_solid_length0.488 INCHES NOMINAL IN
coil_helix_directionLEFT-HAND
spring_deflection_rate3.510 POUNDS PER INCH NOMINAL LBS
spring_free_outside_diameter1.042 INCHES NOMINAL IN
material_document_and_classificationAMS 5673 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-810-6706
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1166-1-B900 · 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 3
1116-578749Reference document
Same NSN cross-reference
Reference document — Secondary reference
695870Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
1166-578749Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 1166-1-B900?
1166-1-B900 is a RESTRICTOR UNIT,FLUID FLOW.
What parts can replace 1166-1-B900?
There are 3 known substitutes for 1166-1-B900: 1116-578749, 695870, 1166-578749. Substitute compatibility should be verified for your specific system.
What is the NSN for 1166-1-B900?
1166-1-B900 is cataloged in the U.S. Government catalog under NSN 4730-00-810-6706. 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.