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1977778-4U — HOSE ASSEMBLY,NONMETALLIC

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

1977778-4U: HOSE ASSEMBLY,NONMETALLIC.

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include flow_angle: 90.0 DEGREES SECOND END, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, inside_diameter: 1.500 INCHES NOMINAL IN, special_features: TWO HOSE ASSY CONNECTED BY A 90 DEG ELBOW,FIRST LEG LG 31.000 IN.,SECOND LEG LG 33.750 IN.LONG IN, thread_direction: RIGHT-HAND SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-345-3882, 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
1977778-4U
NSN: 4720-01-345-3882
FSC: 4720 — Hose and Flexible Tubing
CAGE: 32142 — HYDRASEARCH COMPANY, LLC (USA)
SPECIFICATIONS
flow_angle90.0 DEGREES SECOND END
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
inside_diameter1.500 INCHES NOMINAL IN
special_featuresTWO HOSE ASSY CONNECTED BY A 90 DEG ELBOW,FIRST LEG LG 31.000 IN.,SECOND LEG LG 33.750 IN.LONG IN
thread_directionRIGHT-HAND SECOND END
nominal_thread_size3.062 INCHES FIRST END IN
end_connection_designSTRAIGHT FIRST END
inside_surface_conditionSMOOTH
thread_quantity_per_inch12 FIRST END
thread_series_designatorUN FIRST END
hydrostatic_test_pressure5000.0 POUNDS PER SQUARE INCH LBS
NSN4720-01-345-3882
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 1977778-4U · 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
•
FLOW ANGLE: 90.0 DEGREES SECOND END
•
MEASURING METHOD AND LENGTH: 64.750 INCHES NOMINAL OVERALL IN
•
END CONNECTION DESIGN: ELBOW SECOND END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
THREAD DIRECTION: RIGHT-HAND SECOND END
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES SECOND END
MEASURING METHOD AND LENGTH64.750 INCHES NOMINAL OVERALL IN
END CONNECTION DESIGNELBOW SECOND END
END CONNECTION DESIGNSTRAIGHT FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
CROSS-SECTIONAL SHAPE STYLEROUND
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD DIRECTIONRIGHT-HAND FIRST END
NOMINAL THREAD SIZE3.062 INCHES SECOND END IN
SUBSTITUTES & CROSS-REFERENCES 7
C21124-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1808422 ITEM 27Reference document
Same NSN cross-reference
Reference document — Secondary reference
1977778-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
1808422Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
1977778 ASSY 4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AE712153-001Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1977778-4U?
1977778-4U is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 1977778-4U?
There are 7 known substitutes for 1977778-4U: C21124-4, 1808422 ITEM 27, 1977778-4 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1977778-4U?
1977778-4U is cataloged in the U.S. Government catalog under NSN 4720-01-345-3882. This indicates validated use in U.S. government and defense supply chains.
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