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Technical Data Sheet
PartsTable / MRO / 10503177
10503177 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 ADAPTER,STRAIGHT,PIPE TO HOSE is a the manufacturer industrial component. Key specifications include phase: SINGLE THIRD OPERATING POWER RQMT, relay: NOT INCLUDED, overall_length: 3.000 INCHES NOMINAL IN, mounting_method: BRACKET(S), actuation_method: BUOYANCY, frequency_rating: 120.0 HERTZ NOMINAL SECOND OPERATING POWER RQMT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-3885, 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
MRO→ MRO_GENERAL→ 10503177
NSN: 4730-00-278-3885
FSC: 4730
CAGE: 56161 — GENERAL DYNAMICS LAND SYSTEMS CANADACORP (CAN)
SPECIFICATIONS
phaseSINGLE THIRD OPERATING POWER RQMT
relayNOT INCLUDED
float_quantity1
overall_length3.000 INCHES NOMINAL IN
mounting_methodBRACKET(S)
actuation_methodBUOYANCY
frequency_rating120.0 HERTZ NOMINAL SECOND OPERATING POWER RQMT
overall_diameter2.500 INCHES NOMINAL IN
special_featuresFLOAT DOWN
ac_voltage_rating120.0 VOLTS NOMINAL SECOND OPERATING POWER RQMT
dc_voltage_rating30.0 VOLTS NOMINAL FIRST OPERATING POWER RQMT
mounting_positionVERTICAL
NSN4730-00-278-3885
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 10503177 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
144050Interchangeable
interchangeable cross-reference
interchangeable
AN912-8Interchangeable
interchangeable cross-reference
interchangeable
45B2344Interchangeable
interchangeable cross-reference
interchangeable
FC11744Interchangeable
interchangeable cross-reference
interchangeable
09-21747Interchangeable
interchangeable cross-reference
interchangeable
FD11471Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10503177?
10503177 is a ADAPTER,STRAIGHT,PIPE TO HOSE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 10503177?
There are 20 known substitutes for 10503177: 144050, AN912-8, 45B2344 and 17 more. Substitute compatibility should be verified for your specific system.
Is 10503177 still available?
10503177 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026