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168667-8 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

168667-8: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 1.290 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING, design_type: TUBULAR, thread_class: 2A FIRST PROVISION A, thread_series: UNF FIRST PROVISION, outside_diameter: 0.688 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-351-4071, 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
168667-8
NSN: 4730-01-351-4071
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 24930 — L3HARRIS TECHNOLOGIES, INC DIV SPACE & AIRBORNE SYSTEMS (USA)
SPECIFICATIONS
length1.290 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING
design_typeTUBULAR
thread_class2A FIRST PROVISION A
thread_seriesUNF FIRST PROVISION
outside_diameter0.688 INCHES NOMINAL IN
thread_directionRIGHT-HAND FIRST PROVISION
thread_provisionTHREADED FIRST PROVISION
surface_treatmentPASSIVATE
thread_size_designator9/16-18 FIRST PROVISION
NSN4730-01-351-4071
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 168667-8 · 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: 1.290 INCHES NOMINAL IN
•
THREAD PROVISION: THREADED FIRST PROVISION
•
DESIGN TYPE: TUBULAR
•
THREAD SERIES: UNF FIRST PROVISION
•
OUTSIDE DIAMETER: 0.688 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND FIRST PROVISION
•
THREAD SIZE DESIGNATOR: 9/16-18 FIRST PROVISION
•
SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS
LENGTH1.290 INCHES NOMINAL IN
THREAD PROVISIONTHREADED FIRST PROVISION
DESIGN TYPETUBULAR
THREAD SERIESUNF FIRST PROVISION
OUTSIDE DIAMETER0.688 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND FIRST PROVISION
THREAD SIZE DESIGNATOR9/16-18 FIRST PROVISION
SURFACE TREATMENTPASSIVATE
THREAD CLASS2A FIRST PROVISION A
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 1
168667Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 168667-8?
168667-8 is a RESTRICTOR,FLUID FLOW.
What parts can replace 168667-8?
There is 1 known substitute for 168667-8: 168667. Substitute compatibility should be verified for your specific system.
What is the NSN for 168667-8?
168667-8 is cataloged in the U.S. Government catalog under NSN 4730-01-351-4071. 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.