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AS621 — HOSE ASSEMBLY,NONMETALLIC

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

AS621: HOSE ASSEMBLY,NONMETALLIC.

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include seat_angle: 12.0 DEGREES FIRST END, temp_rating: -65.0 FAHRENHEIT AND 400.0 FAHRENHEIT SINGLE RESPONSE DEGF, thread_class: 3B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST END, inside_diameter: 0.236 INCHES NOMINAL IN, connection_style: SWIVEL NUT, FLARELESS FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-491-3125, 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
AS621
NSN: 4720-00-491-3125
NIINs: 004913125, 012875959, 012875960, 012875961, 012877810, 012877814, 012877815, 013277673, 013277674, 013277675, 013291294, 013291295, 013486312, 013503792
FSC: 4720 — Hose and Flexible Tubing
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
seat_angle12.0 DEGREES FIRST END
temp_rating-65.0 FAHRENHEIT AND 400.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_class3B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
inside_diameter0.236 INCHES NOMINAL IN
connection_styleSWIVEL NUT, FLARELESS FIRST END
outside_diameter0.420 INCHES NOMINAL IN
special_featuresINNER CONVEYING TUBE MATERIAL-PLASTIC, TETRAFLUOROETHYLENE
thread_directionRIGHT-HAND FIRST END
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
burst_test_pressure6000.0 POUNDS PER SQUARE INCH LBS
nominal_thread_size0.437 INCHES FIRST END IN
NSN4720-00-491-3125
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: AS621 · 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: 12.250 INCHES NOMINAL WORKING IN
•
TEMP RATING: -65.0 FAHRENHEIT AND 400.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MINIMUM INSIDE BENDING RADIUS: 3.000 INCHES IN
•
CONNECTION STYLE: SWIVEL NUT, FLARELESS 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 LENGTH12.250 INCHES NOMINAL WORKING IN
TEMP RATING-65.0 FAHRENHEIT AND 400.0 FAHRENHEIT SINGLE RESPONSE DEGF
MINIMUM INSIDE BENDING RADIUS3.000 INCHES IN
CONNECTION STYLESWIVEL NUT, FLARELESS 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 DIAMETER0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
SUBSTITUTES & CROSS-REFERENCES 5
AS621-04-0122Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS27369E0125Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
66060604-0124Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS604Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS27369E0124Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS621?
AS621 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace AS621?
There are 5 known substitutes for AS621: AS621-04-0122, MS27369E0125, 66060604-0124 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS621?
AS621 is cataloged in the U.S. Government catalog under NSN 4720-00-491-3125. This indicates validated use in U.S. government and defense supply chains.
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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.