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S21904-4600 — HOSE ASSEMBLY,METALLIC

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

S21904-4600: HOSE ASSEMBLY,METALLIC.

The HOSE ASSEMBLY,METALLIC is a the manufacturer industrial component. Key specifications include seat_angle: 37.0 DEGREES FIRST END, temp_rating: -300.0 FAHRENHEIT AND 1000.0 FAHRENHEIT SINGLE RESPONSE DEGF, thread_class: 2B FIRST END, exterior_color: NATURAL, connection_type: THREADED INTERNAL TUBE FIRST END, inside_diameter: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-494-9376, 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
S21904-4600
NSN: 4720-00-494-9376
FSC: 4720 — Hose and Flexible Tubing
CAGE: 78570 — SMITHS TUBULAR SYSTEMS-LACONIA, INC. (USA)
SPECIFICATIONS
seat_angle37.0 DEGREES FIRST END
temp_rating-300.0 FAHRENHEIT AND 1000.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_class2B FIRST END
exterior_colorNATURAL
connection_typeTHREADED INTERNAL TUBE FIRST END
inside_diameter0.250 INCHES NOMINAL IN
connection_styleSWIVEL NUT FLARE FIRST END
outside_diameter0.439 INCHES NOMINAL IN
thread_directionRIGHT-HAND FIRST END
features_providedIDENTICAL ENDS
operating_pressure2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
burst_test_pressure9800.0 POUNDS PER SQUARE INCH LBS
NSN4720-00-494-9376
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: S21904-4600 · 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
•
MEASURING METHOD AND LENGTH: 46.000 INCHES NOMINAL OVERALL IN
•
TEMP RATING: -300.0 FAHRENHEIT AND 1000.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MINIMUM INSIDE BENDING RADIUS: 6.250 INCHES IN
•
CONNECTION STYLE: SWIVEL NUT FLARE FIRST END
•
END CONNECTION DESIGN: STRAIGHT FIRST END
•
LAYER COMPOSITION AND LOCATION: OUTER LAYER BRAIDED CORROSION RESISTANT STEEL WIRE
•
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST END
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH46.000 INCHES NOMINAL OVERALL IN
TEMP RATING-300.0 FAHRENHEIT AND 1000.0 FAHRENHEIT SINGLE RESPONSE DEGF
MINIMUM INSIDE BENDING RADIUS6.250 INCHES IN
CONNECTION STYLESWIVEL NUT FLARE FIRST END
END CONNECTION DESIGNSTRAIGHT FIRST END
LAYER COMPOSITION AND LOCATIONOUTER LAYER BRAIDED CORROSION RESISTANT STEEL WIRE
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER0.439 INCHES NOMINAL IN
OPERATING PRESSURE2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
OTHER ITEMS IN FSC 4720 — Hose and Flexible Tubing
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4720-00-000-0080 4720-00-000-0081 4720-00-000-0084 4720-00-000-0724 4720-00-001-0014 4720-00-001-0015 4720-00-001-0023 4720-00-001-0025
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S21904-4600?
S21904-4600 is a HOSE ASSEMBLY,METALLIC.
What is the NSN for S21904-4600?
S21904-4600 is cataloged in the U.S. Government catalog under NSN 4720-00-494-9376. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.