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51801-20 — HOSE ASSEMBLY,AIR BREATHING

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

51801-20: HOSE ASSEMBLY,AIR BREATHING.

The HOSE ASSEMBLY,AIR BREATHING is a the manufacturer industrial component. Key specifications include material: RUBBER FIRST PLY, hose_weight: 5.000 OUNCES PER LINEAR FOOT OZ, wall_thickness: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN, connection_type: THREADED SECOND END, inside_diameter: 0.875 INCHES NOMINAL FIRST END IN, connection_style: ROUND BOTH ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-350-2771, 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
51801-20
NSN: 4720-01-350-2771
FSC: 4720 — Hose and Flexible Tubing
CAGE: 92878 — HDT EXPEDITIONARY SYSTEMS INC (USA)
SPECIFICATIONS
materialRUBBER FIRST PLY
hose_weight5.000 OUNCES PER LINEAR FOOT OZ
wall_thickness0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
connection_typeTHREADED SECOND END
inside_diameter0.875 INCHES NOMINAL FIRST END IN
connection_styleROUND BOTH ENDS
style_designatorHELICALLY WOUND CONTINOUS WIRE SUPPORTED
end_overall_length1.438 INCHES NOMINAL FIRST END IN
end_inside_diameter0.875 INCHES NOMINAL BOTH ENDS IN
cross-sectional_shape_styleROUNDROUND
measuring_method_and_length24.000 INCHES NOMINAL OVERALL IN
minimum_inside_bending_radius0.750 INCHES IN
NSN4720-01-350-2771
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 51801-20 · 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
•
HOSE WEIGHT: 5.000 OUNCES PER LINEAR FOOT OZ
•
MEASURING METHOD AND LENGTH: 24.000 INCHES NOMINAL OVERALL IN
•
MINIMUM INSIDE BENDING RADIUS: 0.750 INCHES IN
•
CONNECTION STYLE: ROUND BOTH ENDS
•
CONNECTION TYPE: THREADED FIRST END
•
STYLE DESIGNATOR: HELICALLY WOUND CONTINOUS WIRE SUPPORTED
•
CROSS-SECTIONAL SHAPE STYLE: ROUNDROUND
TECHNICAL CHARACTERISTICS
HOSE WEIGHT5.000 OUNCES PER LINEAR FOOT OZ
MEASURING METHOD AND LENGTH24.000 INCHES NOMINAL OVERALL IN
MINIMUM INSIDE BENDING RADIUS0.750 INCHES IN
CONNECTION STYLEROUND BOTH ENDS
CONNECTION TYPETHREADED FIRST END
CONNECTION TYPETHREADED SECOND END
STYLE DESIGNATORHELICALLY WOUND CONTINOUS WIRE SUPPORTED
CROSS-SECTIONAL SHAPE STYLEROUNDROUND
WALL THICKNESS0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
INSIDE DIAMETER0.875 INCHES NOMINAL FIRST END IN
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
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 51801-20?
51801-20 is a HOSE ASSEMBLY,AIR BREATHING.
What is the NSN for 51801-20?
51801-20 is cataloged in the U.S. Government catalog under NSN 4720-01-350-2771. This indicates validated use in U.S. government and defense supply chains.
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