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1B6999 — HOSE ASSEMBLY,NONMETALLIC

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

1B6999: HOSE ASSEMBLY,NONMETALLIC.

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include seat_angle: 37.0 DEGREES FIRST END, temp_rating: -65.0 FAHRENHEIT AND 450.0 FAHRENHEIT SINGLE RESPONSE DEGF, thread_class: 3B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST END, inside_diameter: 0.312 INCHES NOMINAL IN, connection_style: SWIVEL NUT FLARE FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-421-9713, 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
1B6999
NSN: 4720-01-421-9713
FSC: 4720 — Hose and Flexible Tubing
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
seat_angle37.0 DEGREES FIRST END
temp_rating-65.0 FAHRENHEIT AND 450.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_class3B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
inside_diameter0.312 INCHES NOMINAL IN
connection_styleSWIVEL NUT FLARE FIRST END
outside_diameter0.469 INCHES NOMINAL IN
thread_directionRIGHT-HAND FIRST END
features_providedNUTS DRILLED FOR LOCKWIRE
burst_test_pressure6000.0 POUNDS PER SQUARE INCH LBS
nominal_thread_size0.562 INCHES FIRST END IN
end_connection_designSTRAIGHT FIRST END
NSN4720-01-421-9713
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 1B6999 · 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: 9.620 INCHES NOMINAL WORKING IN
•
TEMP RATING: -65.0 FAHRENHEIT AND 450.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MINIMUM INSIDE BENDING RADIUS: 4.000 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 LENGTH9.620 INCHES NOMINAL WORKING IN
TEMP RATING-65.0 FAHRENHEIT AND 450.0 FAHRENHEIT SINGLE RESPONSE DEGF
MINIMUM INSIDE BENDING RADIUS4.000 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 DIAMETER0.469 INCHES NOMINAL IN
FEATURES PROVIDEDNUTS DRILLED FOR LOCKWIRE
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1B6999?
1B6999 is a HOSE ASSEMBLY,NONMETALLIC.
What is the NSN for 1B6999?
1B6999 is cataloged in the U.S. Government catalog under NSN 4720-01-421-9713. 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.