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5174056 ✓ 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

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: COPPER ALLOY OVERALL, nut_style: TUBE COUPLING, nut_height: 1.250 INCHES NOMINAL IN, seat_angle: 20.00 DEGREES NOMINAL, thread_series: UNS, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-054-2572, 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
5174056
NSN: 4730-00-054-2572
FSC: 4730
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleTUBE COUPLING
nut_height1.250 INCHES NOMINAL IN
seat_angle20.00 DEGREES NOMINAL
thread_seriesUNS
thread_directionRIGHT-HAND
length_to_shoulder0.500 INCHES NOMINAL IN
width_across_flats0.813 INCHES NOMINAL IN
nominal_thread_size0.687 INCHES IN
thread_pitch_diameters+0.6550 TO 0.6606 INCHES IN
smallest_inside_diameter0.507 INCHES NOMINAL IN
thread_quantity_per_inch20
NSN4730-00-054-2572
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5174056 · 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
•
MATERIAL: COPPER ALLOY OVERALL
•
SMALLEST INSIDE DIAMETER: 0.507 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.687 INCHES IN
•
WIDTH ACROSS FLATS: 0.813 INCHES NOMINAL IN
•
THREAD SERIES: UNS
•
NUT HEIGHT: 1.250 INCHES NOMINAL IN
•
LENGTH TO SHOULDER: 0.500 INCHES NOMINAL IN
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.500 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
SMALLEST INSIDE DIAMETER0.507 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.687 INCHES IN
WIDTH ACROSS FLATS0.813 INCHES NOMINAL IN
THREAD SERIESUNS
NUT HEIGHT1.250 INCHES NOMINAL IN
LENGTH TO SHOULDER0.500 INCHES NOMINAL IN
NOMINAL TUBE OUTSIDE DIAMETER0.500 INCHES IN
SEAT ANGLE20.00 DEGREES NOMINAL
NUT STYLETUBE COUPLING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
203755Interchangeable
interchangeable cross-reference
interchangeable
824583Interchangeable
interchangeable cross-reference
interchangeable
200360Interchangeable
interchangeable cross-reference
interchangeable
47128HInterchangeable
interchangeable cross-reference
interchangeable
34-3680Interchangeable
interchangeable cross-reference
interchangeable
460-2976-02-03-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5174056?
5174056 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 5174056?
There are 10 known substitutes for 5174056: 203755, 824583, 200360 and 7 more. Substitute compatibility should be verified for your specific system.
Is 5174056 still available?
5174056 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