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Technical Data Sheet
PartsTable / COMPONENT / 50B3859
50B3859 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The HOSE ASSEMBLY,AIR BREATHING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING REINFORCING WIRE, wall_thickness: 0.219 INCHES NOMINAL0.219 INCHES NOMINAL IN, connection_type: PLAIN BOTH ENDS, inside_diameter: 0.750 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST END IN, connection_style: ROUND BOTH ENDS, outside_diameter: 1.094 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST END IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-705-6900, 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
50B3859
NSN: 4720-00-705-6900
FSC: 4720
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING REINFORCING WIRE
wall_thickness0.219 INCHES NOMINAL0.219 INCHES NOMINAL IN
connection_typePLAIN BOTH ENDS
inside_diameter0.750 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST END IN
connection_styleROUND BOTH ENDS
outside_diameter1.094 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST END IN
style_designatorFULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS
features_providedOZONE RESISTANT
end_overall_length1.000 INCHES NOMINAL BOTH ENDS IN
end_inside_diameter0.875 INCHES NOMINAL BOTH ENDS IN
cross-sectional_shape_styleROUNDROUND
measuring_method_and_length12.000 INCHES NOMINAL OVERALL IN
NSN4720-00-705-6900
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 50B3859 · 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
•
INSIDE DIAMETER: 0.750 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST END IN
•
END OVERALL LENGTH: 1.000 INCHES NOMINAL BOTH ENDS IN
•
END INSIDE DIAMETER: 0.875 INCHES NOMINAL BOTH ENDS IN
•
CONNECTION TYPE: PLAIN BOTH ENDS
•
OUTSIDE DIAMETER: 1.094 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST END IN
•
FEATURES PROVIDED: OZONE RESISTANT
•
CROSS-SECTIONAL SHAPE STYLE: ROUNDROUND
•
STYLE DESIGNATOR: FULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DIAMETER0.750 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST END IN
END OVERALL LENGTH1.000 INCHES NOMINAL BOTH ENDS IN
END INSIDE DIAMETER0.875 INCHES NOMINAL BOTH ENDS IN
CONNECTION TYPEPLAIN BOTH ENDS
OUTSIDE DIAMETER1.094 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST END IN
FEATURES PROVIDEDOZONE RESISTANT
CROSS-SECTIONAL SHAPE STYLEROUNDROUND
STYLE DESIGNATORFULLY CONVOLUTED W/ WIRE RINGS BETWEEN CONVOLUTIONS
MATERIALPLASTIC POLYAMIDE NYLON SECOND PLY
MATERIALCOTTON AND FIBERGLASS FIRST PLY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
REDAR A90105-13Interchangeable
interchangeable cross-reference
interchangeable
WS4127-3-72Interchangeable
interchangeable cross-reference
interchangeable
266AS100-3Interchangeable
interchangeable cross-reference
interchangeable
266AS100Interchangeable
interchangeable cross-reference
interchangeable
A80910-6Interchangeable
interchangeable cross-reference
interchangeable
12111-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 50B3859?
50B3859 is a HOSE ASSEMBLY,AIR BREATHING.
What parts can replace 50B3859?
There are 26 known substitutes for 50B3859: REDAR A90105-13, WS4127-3-72, 266AS100-3 and 23 more. Substitute compatibility should be verified for your specific system.
Is 50B3859 still available?
50B3859 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026