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Technical Data Sheet
PartsTable / COMPONENT / P401-175-982
P401-175-982 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 0.500 INCHES NOMINAL IN, material: PLASTIC POLYCARBONATE, design_type: TUBULAR, orifice_diameter: 0.982 INCHES NOMINAL IN, outside_diameter: 1.750 INCHES NOMINAL IN, thread_provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-257-0899, 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
P401-175-982
NSN: 4730-01-257-0899
FSC: 4730
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
length0.500 INCHES NOMINAL IN
materialPLASTIC POLYCARBONATE
design_typeTUBULAR
orifice_diameter0.982 INCHES NOMINAL IN
outside_diameter1.750 INCHES NOMINAL IN
thread_provisionUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
NSN4730-01-257-0899
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: P401-175-982 · 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
•
OUTSIDE DIAMETER: 1.750 INCHES NOMINAL IN
•
ORIFICE DIAMETER: 0.982 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYCARBONATE
•
DESIGN TYPE: TUBULAR
•
THREAD PROVISION: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
•
LENGTH: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER1.750 INCHES NOMINAL IN
ORIFICE DIAMETER0.982 INCHES NOMINAL IN
MATERIALPLASTIC POLYCARBONATE
DESIGN TYPETUBULAR
THREAD PROVISIONUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
LENGTH0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
SYM65Interchangeable
interchangeable cross-reference
interchangeable
50A/RS-120VInterchangeable
interchangeable cross-reference
interchangeable
H676-1101-LTG291Interchangeable
interchangeable cross-reference
interchangeable
P401Interchangeable
interchangeable cross-reference
interchangeable
P401-125Interchangeable
interchangeable cross-reference
interchangeable
4730PL1718955Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is P401-175-982?
P401-175-982 is a RESTRICTOR,FLUID FLOW.
What parts can replace P401-175-982?
There are 14 known substitutes for P401-175-982: SYM65, 50A/RS-120V, H676-1101-LTG291 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P401-175-982?
P401-175-982 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-257-0899. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026