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1779AS171 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1779AS171: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 0.550 INCHES NOMINAL IN, material: COPPER, design_type: TUBULAR, thread_class: 2A LOCATION NOT OTHERWISE SPECIFIED A, thread_length: 0.550 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, thread_series: ANPT LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-334-1488, 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
1779AS171
NSN: 4730-01-334-1488
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
length0.550 INCHES NOMINAL IN
materialCOPPER
design_typeTUBULAR
thread_class2A LOCATION NOT OTHERWISE SPECIFIED A
thread_length0.550 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
thread_seriesANPT LOCATION NOT OTHERWISE SPECIFIED
orifice_diameter0.010 INCHES NOMINAL IN
outside_diameter0.750 INCHES NOMINAL IN
special_featuresMODIFIED BY 0.062 IN. ID COUNTERBORE AND 0.010 IN. CTR HOLE IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
thread_provisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
thread_size_designator3/4-14 LOCATION NOT OTHERWISE SPECIFIED
NSN4730-01-334-1488
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1779AS171 · 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: 0.550 INCHES NOMINAL IN
•
THREAD PROVISION: THREADED LOCATION NOT OTHERWISE SPECIFIED
•
DESIGN TYPE: TUBULAR
•
THREAD SERIES: ANPT LOCATION NOT OTHERWISE SPECIFIED
•
THREAD LENGTH: 0.550 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
•
SPECIFICATION/STANDARD DATA: 96906-MS27769 GOVERNMENT STANDARD
TECHNICAL CHARACTERISTICS
LENGTH0.550 INCHES NOMINAL IN
THREAD PROVISIONTHREADED LOCATION NOT OTHERWISE SPECIFIED
DESIGN TYPETUBULAR
THREAD SERIESANPT LOCATION NOT OTHERWISE SPECIFIED
THREAD LENGTH0.550 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
SPECIFICATION/STANDARD DATA96906-MS27769 GOVERNMENT STANDARD
THREAD SIZE DESIGNATOR3/4-14 LOCATION NOT OTHERWISE SPECIFIED
SPECIAL FEATURESMODIFIED BY 0.062 IN. ID COUNTERBORE AND 0.010 IN. CTR HOLE 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
1779AS171-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1779AS171?
1779AS171 is a RESTRICTOR,FLUID FLOW.
What parts can replace 1779AS171?
There is 1 known substitute for 1779AS171: 1779AS171-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 1779AS171?
1779AS171 is cataloged in the U.S. Government catalog under NSN 4730-01-334-1488. 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.