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1644174 ✓ 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,METALLIC is a the manufacturer industrial component. Key specifications include inside_diameter: 0.375 INCHES NOMINAL IN, operating_pressure: 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS, supplementary_features: REINFORCEMENT: 4-PLIES OF SPIRALLY WRAPPED HIGH TENSILE STEEL WIRE. TUBE IS BLACK, OIL RESISTANT, NEOPRENE., end_item_identification: NSN: 3990-01-443-8024, measuring_method_and_length: 16.000 INCHES NOMINAL OVERALL IN, part_name_assigned_by_controlling_agency: HOSE 11/16 ORS X 16 SF/90 SF 4000.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-538-3118, 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
1644174
NSN: 4720-01-538-3118
FSC: 4720
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
inside_diameter0.375 INCHES NOMINAL IN
operating_pressure4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
supplementary_featuresREINFORCEMENT: 4-PLIES OF SPIRALLY WRAPPED HIGH TENSILE STEEL WIRE. TUBE IS BLACK, OIL RESISTANT, NEOPRENE.
end_item_identificationNSN: 3990-01-443-8024
measuring_method_and_length16.000 INCHES NOMINAL OVERALL IN
part_name_assigned_by_controlling_agencyHOSE 11/16 ORS X 16 SF/90 SF 4000
NSN4720-01-538-3118
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 1644174 · 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: 0.375 INCHES NOMINAL IN
•
MEASURING METHOD AND LENGTH: 16.000 INCHES NOMINAL OVERALL IN
•
SUPPLEMENTARY FEATURES: REINFORCEMENT: 4-PLIES OF SPIRALLY WRAPPED HIGH TENSILE STEEL WIRE. TUBE IS BLACK, OIL RESISTANT, NEOPRENE.
•
OPERATING PRESSURE: 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONNSN: 3990-01-443-8024
INSIDE DIAMETER0.375 INCHES NOMINAL IN
MEASURING METHOD AND LENGTH16.000 INCHES NOMINAL OVERALL IN
SUPPLEMENTARY FEATURESREINFORCEMENT: 4-PLIES OF SPIRALLY WRAPPED HIGH TENSILE STEEL WIRE. TUBE IS BLACK, OIL RESISTANT, NEOPRENE.
OPERATING PRESSURE4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
PART NAME ASSIGNED BY CONTROLLING AGENCYHOSE 11/16 ORS X 16 SF/90 SF 4000
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
405922Interchangeable
interchangeable cross-reference
interchangeable
SNC54LS122JInterchangeable
interchangeable cross-reference
interchangeable
SM-A-915703Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1644174?
1644174 is a HOSE ASSEMBLY,METALLIC.
What parts can replace 1644174?
There are 3 known substitutes for 1644174: 405922, SNC54LS122J, SM-A-915703. Substitute compatibility should be verified for your specific system.
What is the NSN for 1644174?
1644174 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-538-3118. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026