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FF1981-031-0606 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

FF1981-031-0606: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include thread_class: 2B SECOND PROVISION, orifice_diameter: 0.031 INCHES NOMINAL IN, special_features: RESTRICTOR HAS 37 DEGREE MALE AND FEMALE FLARE, thread_direction: RIGHT-HAND SECOND PROVISION, thread_provision: THREADED FIRST PROVISION, thread_size_designator: 9/16-18 SECOND PROVISION. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-506-9491, 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
FF1981-031-0606
NSN: 4730-01-506-9491
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 01276 — DANFOSS POWER SOLUTIONS II, LLC (USA)
SPECIFICATIONS
thread_class2B SECOND PROVISION
orifice_diameter0.031 INCHES NOMINAL IN
special_featuresRESTRICTOR HAS 37 DEGREE MALE AND FEMALE FLARE
thread_directionRIGHT-HAND SECOND PROVISION
thread_provisionTHREADED FIRST PROVISION
thread_size_designator9/16-18 SECOND PROVISION
end_item_identification2420-01-160-2754;TRACTOR,WHEELED,INDUSTRIAL SMALL REPLACEMENT EXCAVATOR (RO48)(MMMH)
hose/tube_size_for_which_designed0.38 INCH OD TUBE IN
NSN4730-01-506-9491
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: FF1981-031-0606 · 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
•
THREAD PROVISION: THREADED FIRST PROVISION
•
HOSE/TUBE SIZE FOR WHICH DESIGNED: 0.38 INCH OD TUBE IN
•
THREAD DIRECTION: RIGHT-HAND FIRST PROVISION
•
THREAD SIZE DESIGNATOR: 9/16-18 SECOND PROVISION
TECHNICAL CHARACTERISTICS
THREAD PROVISIONTHREADED FIRST PROVISION
THREAD PROVISIONTHREADED SECOND PROVISION
HOSE/TUBE SIZE FOR WHICH DESIGNED0.38 INCH OD TUBE IN
THREAD DIRECTIONRIGHT-HAND FIRST PROVISION
THREAD DIRECTIONRIGHT-HAND SECOND PROVISION
THREAD SIZE DESIGNATOR9/16-18 SECOND PROVISION
THREAD SIZE DESIGNATOR9/16-18 FIRST PROVISION
SPECIAL FEATURESRESTRICTOR HAS 37 DEGREE MALE AND FEMALE FLARE
THREAD CLASS2A FIRST PROVISION A
THREAD CLASS2B SECOND PROVISION
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 FF1981-031-0606?
FF1981-031-0606 is a RESTRICTOR,FLUID FLOW.
What is the NSN for FF1981-031-0606?
FF1981-031-0606 is cataloged in the U.S. Government catalog under NSN 4730-01-506-9491. This indicates validated use in U.S. government and defense supply chains.
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