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3930AS481 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3930AS481: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 2.070 INCHES NOMINAL IN, material: STEEL COMP 410, design_type: TUBULAR, thread_class: 3B LOCATION NOT OTHERWISE SPECIFIED, thread_length: 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF) LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-156-7267, 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
3930AS481
NSN: 4730-01-156-7267
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
length2.070 INCHES NOMINAL IN
materialSTEEL COMP 410
design_typeTUBULAR
thread_class3B LOCATION NOT OTHERWISE SPECIFIED
thread_length0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF) LOCATION NOT OTHERWISE SPECIFIED
orifice_diameter0.086 INCHES NOMINAL IN
outside_diameter0.436 INCHES NOMINAL IN
special_featuresWITH MOUNTING RETAINER,ORIFICE HOLE VERTICAL TO AXIS
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
thread_provisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
thread_size_designator0.190-32 LOCATION NOT OTHERWISE SPECIFIED
NSN4730-01-156-7267
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3930AS481 · 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: 2.070 INCHES NOMINAL IN
•
THREAD PROVISION: THREADED LOCATION NOT OTHERWISE SPECIFIED
•
DESIGN TYPE: TUBULAR
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF) LOCATION NOT OTHERWISE SPECIFIED
•
THREAD LENGTH: 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
OUTSIDE DIAMETER: 0.436 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
•
THREAD SIZE DESIGNATOR: 0.190-32 LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS
LENGTH2.070 INCHES NOMINAL IN
THREAD PROVISIONTHREADED LOCATION NOT OTHERWISE SPECIFIED
DESIGN TYPETUBULAR
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF) LOCATION NOT OTHERWISE SPECIFIED
THREAD LENGTH0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE DIAMETER0.436 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
THREAD SIZE DESIGNATOR0.190-32 LOCATION NOT OTHERWISE SPECIFIED
SPECIAL FEATURESWITH MOUNTING RETAINER,ORIFICE HOLE VERTICAL TO AXIS
THREAD CLASS3B LOCATION NOT OTHERWISE SPECIFIED
SUBSTITUTES & CROSS-REFERENCES 3
74A733051Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
10108809Reference document
Same NSN cross-reference
Reference document — Informative reference only
74A733051-2009Reference 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 3930AS481?
3930AS481 is a RESTRICTOR,FLUID FLOW.
What parts can replace 3930AS481?
There are 3 known substitutes for 3930AS481: 74A733051, 10108809, 74A733051-2009. Substitute compatibility should be verified for your specific system.
What is the NSN for 3930AS481?
3930AS481 is cataloged in the U.S. Government catalog under NSN 4730-01-156-7267. 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.