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3970921 — HOSE ASSEMBLY,NONMETALLIC

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

3970921: HOSE ASSEMBLY,NONMETALLIC.

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include connection_type: UNTHREADED EXTERNAL HOSE SECOND END, special_features: ONE END PLAIN, OTHER END INTERNALLY THREADED SWIVEL NUT, end_connection_design: STRAIGHT ALL ENDS, end_item_identification: DIESEL ENGINE, media_for_which_designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE, cross-sectional_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-566-8713, 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
3970921
NSN: 4720-01-566-8713
FSC: 4720 — Hose and Flexible Tubing
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
connection_typeUNTHREADED EXTERNAL HOSE SECOND END
special_featuresONE END PLAIN, OTHER END INTERNALLY THREADED SWIVEL NUT
end_connection_designSTRAIGHT ALL ENDS
end_item_identificationDIESEL ENGINE
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
cross-sectional_shape_styleROUND
part_name_assigned_by_controlling_agencyFLEXIBLE HOSE
NSN4720-01-566-8713
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 3970921 · 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
•
END CONNECTION DESIGN: STRAIGHT ALL ENDS
•
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE SECOND END
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
TECHNICAL CHARACTERISTICS
END CONNECTION DESIGNSTRAIGHT ALL ENDS
CONNECTION TYPEUNTHREADED EXTERNAL HOSE SECOND END
CROSS-SECTIONAL SHAPE STYLEROUND
SPECIAL FEATURESONE END PLAIN, OTHER END INTERNALLY THREADED SWIVEL NUT
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
PART NAME ASSIGNED BY CONTROLLING AGENCYFLEXIBLE HOSE
END ITEM IDENTIFICATIONDIESEL ENGINE
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3970921?
3970921 is a HOSE ASSEMBLY,NONMETALLIC.
What is the NSN for 3970921?
3970921 is cataloged in the U.S. Government catalog under NSN 4720-01-566-8713. 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.