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Technical Data Sheet
PartsTable / COMPONENT / R18523
R18523 ✓ 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: 30.0 DEGREES FIRST END, temp_rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF, exterior_color: BLACK, connection_type: THREADED EXTERNAL PIPE FIRST END, inside_diameter: 0.500 INCHES NOMINAL IN, connection_style: INVERTED 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 4720-00-447-3583, 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
R18523
NSN: 4720-00-447-3583
FSC: 4720
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
seat_angle30.0 DEGREES FIRST END
temp_rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
exterior_colorBLACK
connection_typeTHREADED EXTERNAL PIPE FIRST END
inside_diameter0.500 INCHES NOMINAL IN
connection_styleINVERTED FLARE FIRST END
outside_diameter0.970 INCHES NOMINAL IN
thread_directionRIGHT-HAND FIRST END
features_providedREUSABLE END FITTINGS
operating_pressure3500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
burst_test_pressure14000.0 POUNDS PER SQUARE INCH LBS
nominal_thread_size0.500 INCHES FIRST END IN
NSN4720-00-447-3583
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: R18523 · 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
•
INSIDE SURFACE CONDITION: SMOOTH
•
OUTSIDE DIAMETER: 0.970 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
CONNECTION STYLE: INVERTED FLARE FIRST END
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
THREAD SERIES DESIGNATOR: NPTF FIRST END
•
BURST TEST PRESSURE: 14000.0 POUNDS PER SQUARE INCH LBS
•
OPERATING PRESSURE: 3500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE SURFACE CONDITIONSMOOTH
OUTSIDE DIAMETER0.970 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEROUND
CONNECTION STYLEINVERTED FLARE FIRST END
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
THREAD SERIES DESIGNATORNPTF FIRST END
BURST TEST PRESSURE14000.0 POUNDS PER SQUARE INCH LBS
OPERATING PRESSURE3500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
SEAT ANGLE30.0 DEGREES FIRST END
INSIDE DIAMETER0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
21669Interchangeable
interchangeable cross-reference
interchangeable
S6127-61801-2Interchangeable
interchangeable cross-reference
interchangeable
18523Interchangeable
interchangeable cross-reference
interchangeable
C683Interchangeable
interchangeable cross-reference
interchangeable
1E8012-0402Interchangeable
interchangeable cross-reference
interchangeable
21668Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R18523?
R18523 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace R18523?
There are 23 known substitutes for R18523: 21669, S6127-61801-2, 18523 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R18523?
R18523 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-447-3583. 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