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1643740 — HOSE ASSEMBLY,NONMETALLIC

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

1643740: HOSE ASSEMBLY,NONMETALLIC.

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include inside_diameter: 0.375 INCHES NOMINAL IN, special_features: BOTH ENDS ARE: 9/16 - 18 JIC - 6 FEMALE, ONE HAS A 90DEG BEND., operating_pressure: 2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS, end_item_identification: 3990-01-443-8024 PLS ENGINEERING MISSION MODULE; 3990-01-307-7676 PLS FLATRACK, measuring_method_and_length: 16.000 INCHES NOMINAL OVERALL IN, part_name_assigned_by_controlling_agency: HOSE 9/16 JIC X 16 SF/RM 2500 90. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-538-3533, 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
1643740
NSN: 4720-01-538-3533
FSC: 4720 — Hose and Flexible Tubing
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
inside_diameter0.375 INCHES NOMINAL IN
special_featuresBOTH ENDS ARE: 9/16 - 18 JIC - 6 FEMALE, ONE HAS A 90DEG BEND.
operating_pressure2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
end_item_identification3990-01-443-8024 PLS ENGINEERING MISSION MODULE; 3990-01-307-7676 PLS FLATRACK
measuring_method_and_length16.000 INCHES NOMINAL OVERALL IN
part_name_assigned_by_controlling_agencyHOSE 9/16 JIC X 16 SF/RM 2500 90
NSN4720-01-538-3533
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 1643740 · 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: 16.000 INCHES NOMINAL OVERALL IN
•
OPERATING PRESSURE: 2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
•
INSIDE DIAMETER: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH16.000 INCHES NOMINAL OVERALL IN
OPERATING PRESSURE2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
INSIDE DIAMETER0.375 INCHES NOMINAL IN
SPECIAL FEATURESBOTH ENDS ARE: 9/16 - 18 JIC - 6 FEMALE, ONE HAS A 90DEG BEND.
PART NAME ASSIGNED BY CONTROLLING AGENCYHOSE 9/16 JIC X 16 SF/RM 2500 90
END ITEM IDENTIFICATION3990-01-443-8024 PLS ENGINEERING MISSION MODULE; 3990-01-307-7676 PLS FLATRACK
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 2
404549Reference document
Same NSN cross-reference
Reference document — Secondary reference
5HE980Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1643740?
1643740 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 1643740?
There are 2 known substitutes for 1643740: 404549, 5HE980. Substitute compatibility should be verified for your specific system.
What is the NSN for 1643740?
1643740 is cataloged in the U.S. Government catalog under NSN 4720-01-538-3533. 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.