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SS4017-4 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

SS4017-4: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN, material: STEEL, design_type: PLATE, thread_class: 2A LOCATION NOT OTHERWISE SPECIFIED A, thread_length: 0.281 INCHES MINIMUM FIRST PROVISION IN, thread_series: UNIFIED NATIONAL COARSE (UNC) FIRST PROVISION. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-901-1909, 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
SS4017-4
NSN: 4730-00-901-1909
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
length0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
materialSTEEL
design_typePLATE
thread_class2A LOCATION NOT OTHERWISE SPECIFIED A
thread_length0.281 INCHES MINIMUM FIRST PROVISION IN
thread_seriesUNIFIED NATIONAL COARSE (UNC) FIRST PROVISION
orifice_diameter0.070 INCHES NOMINAL IN
outside_diameter0.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
thread_provisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
surface_treatmentCADMIUM
thread_size_designator1/4 IN.-20 LOCATION NOT OTHERWISE SPECIFIED IN
NSN4730-00-901-1909
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: SS4017-4 · 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: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
•
THREAD PROVISION: THREADED LOCATION NOT OTHERWISE SPECIFIED
•
DESIGN TYPE: PLATE
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC) FIRST PROVISION
•
THREAD LENGTH: 0.281 INCHES MINIMUM FIRST PROVISION IN
•
OUTSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS
LENGTH0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
THREAD PROVISIONTHREADED LOCATION NOT OTHERWISE SPECIFIED
DESIGN TYPEPLATE
THREAD SERIESUNIFIED NATIONAL COARSE (UNC) FIRST PROVISION
THREAD LENGTH0.281 INCHES MINIMUM FIRST PROVISION IN
THREAD LENGTH0.343 INCHES MAXIMUM SECOND PROVISION IN
OUTSIDE DIAMETER0.250 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
THREAD SIZE DESIGNATOR1/4 IN.-20 LOCATION NOT OTHERWISE SPECIFIED IN
SURFACE TREATMENTCADMIUM
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

No substitute or cross-reference records for this part.

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 SS4017-4?
SS4017-4 is a RESTRICTOR,FLUID FLOW.
What is the NSN for SS4017-4?
SS4017-4 is cataloged in the U.S. Government catalog under NSN 4730-00-901-1909. 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.