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1525B40 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1525B40: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 2.688 INCHES NOMINAL IN, material: STEEL, design_type: TUBULAR, thread_length: 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, thread_series: UNS LOCATION NOT OTHERWISE SPECIFIED, orifice_diameter: 1.600 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-135-4776, 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
1525B40
NSN: 4730-00-135-4776
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 6K4C8 — GOODRICH CORPORATION (USA)
SPECIFICATIONS
length2.688 INCHES NOMINAL IN
materialSTEEL
design_typeTUBULAR
thread_length0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
thread_seriesUNS LOCATION NOT OTHERWISE SPECIFIED
orifice_diameter1.600 INCHES NOMINAL IN
outside_diameter2.375 INCHES NOMINAL IN
thread_provisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
thread_pitch_diameters+2.2983 TO 2.3750 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
thread_size_designator2-3/8-16 LOCATION NOT OTHERWISE SPECIFIED
end_item_identificationOV10A
hose/tube_size_for_which_designed1-7/8 IN OD TUBE IN
NSN4730-00-135-4776
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1525B40 · 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: 2.688 INCHES NOMINAL IN
•
THREAD PROVISION: THREADED LOCATION NOT OTHERWISE SPECIFIED
•
DESIGN TYPE: TUBULAR
•
THREAD SERIES: UNS LOCATION NOT OTHERWISE SPECIFIED
•
THREAD LENGTH: 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
HOSE/TUBE SIZE FOR WHICH DESIGNED: 1-7/8 IN OD TUBE IN
•
THREAD PITCH DIAMETERS: +2.2983 TO 2.3750 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
•
OUTSIDE DIAMETER: 2.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH2.688 INCHES NOMINAL IN
THREAD PROVISIONTHREADED LOCATION NOT OTHERWISE SPECIFIED
DESIGN TYPETUBULAR
THREAD SERIESUNS LOCATION NOT OTHERWISE SPECIFIED
THREAD LENGTH0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
HOSE/TUBE SIZE FOR WHICH DESIGNED1-7/8 IN OD TUBE IN
THREAD PITCH DIAMETERS+2.2983 TO 2.3750 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE DIAMETER2.375 INCHES NOMINAL IN
THREAD SIZE DESIGNATOR2-3/8-16 LOCATION NOT OTHERWISE SPECIFIED
END ITEM IDENTIFICATIONOV10A
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 1525B40?
1525B40 is a RESTRICTOR,FLUID FLOW.
What is the NSN for 1525B40?
1525B40 is cataloged in the U.S. Government catalog under NSN 4730-00-135-4776. 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.