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Technical Data Sheet
PartsTable / COMPONENT / 12256658-3
12256658-3 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include seat_angle: 37.0 DEGREES SECOND END, temp_rating: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF, thread_class: 3A SECOND END A, connection_type: THREADED EXTERNAL TUBE SECOND END, inside_diameter: 1.000 INCHES NOMINAL IN, connection_style: SWIVEL NUT FLARE FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-173-4609, 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
12256658-3
NSN: 4720-01-173-4609
FSC: 4720
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
seat_angle37.0 DEGREES SECOND END
temp_rating-65.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_class3A SECOND END A
connection_typeTHREADED EXTERNAL TUBE SECOND END
inside_diameter1.000 INCHES NOMINAL IN
connection_styleSWIVEL NUT FLARE FIRST END
outside_diameter1.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND FIRST END
operating_pressure1125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
burst_test_pressure4500.0 POUNDS PER SQUARE INCH LBS
nominal_thread_size1.312 INCHES FIRST END IN
end_connection_designSTRAIGHT SECOND END
NSN4720-01-173-4609
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 12256658-3 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD SERIES DESIGNATOR: UN SECOND END
•
THREAD QUANTITY PER INCH: 12 SECOND END
•
INSIDE SURFACE CONDITION: SMOOTH
•
MEASURING METHOD AND LENGTH: 80.000 INCHES NOMINAL OVERALL IN
•
INSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
HYDROSTATIC TEST PRESSURE: 2250.0 POUNDS PER SQUARE INCH LBS
•
CONNECTION STYLE: SWIVEL NUT FLARE FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUN SECOND END
THREAD QUANTITY PER INCH12 SECOND END
INSIDE SURFACE CONDITIONSMOOTH
MEASURING METHOD AND LENGTH80.000 INCHES NOMINAL OVERALL IN
INSIDE DIAMETER1.000 INCHES NOMINAL IN
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
HYDROSTATIC TEST PRESSURE2250.0 POUNDS PER SQUARE INCH LBS
CONNECTION STYLESWIVEL NUT FLARE FIRST END
NOMINAL THREAD SIZE1.312 INCHES SECOND END IN
END CONNECTION DESIGNSTRAIGHT FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
A35013Interchangeable
interchangeable cross-reference
interchangeable
35013Interchangeable
interchangeable cross-reference
interchangeable
523003Interchangeable
interchangeable cross-reference
interchangeable
6540NCM104391Interchangeable
interchangeable cross-reference
interchangeable
16793Interchangeable
interchangeable cross-reference
interchangeable
12256658Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12256658-3?
12256658-3 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 12256658-3?
There are 7 known substitutes for 12256658-3: A35013, 35013, 523003 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12256658-3?
12256658-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-173-4609. 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