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1643972 — ELBOW,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1643972: ELBOW,TUBE TO BOSS.

The ELBOW,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nominal_length: 1.310 INCHES FIRST END IN, special_features: INSIDE DIAMETER 0.484 INCHES, BOTH OPENINGS IN, end_item_identification: 2320-01-522-1859; TRUCK, DUMP, part_name_assigned_by_controlling_agency: ADAPTER 1 ORSM X 7/8 ORBM 90 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-570-8963, 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
1643972
NSN: 4730-01-570-8963
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nominal_length1.310 INCHES FIRST END IN
special_featuresINSIDE DIAMETER 0.484 INCHES, BOTH OPENINGS IN
end_item_identification2320-01-522-1859; TRUCK, DUMP
part_name_assigned_by_controlling_agencyADAPTER 1 ORSM X 7/8 ORBM 90 DEGREES
NSN4730-01-570-8963
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1643972 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL LENGTH: 1.310 INCHES FIRST END IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
NOMINAL LENGTH1.310 INCHES FIRST END IN
NOMINAL LENGTH1.970 INCHES SECOND END IN
SPECIAL FEATURESINSIDE DIAMETER 0.484 INCHES, BOTH OPENINGS IN
PART NAME ASSIGNED BY CONTROLLING AGENCYADAPTER 1 ORSM X 7/8 ORBM 90 DEGREES
END ITEM IDENTIFICATION2320-01-522-1859; TRUCK, DUMP
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
405555Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1643972?
1643972 is a ELBOW,TUBE TO BOSS.
What parts can replace 1643972?
There is 1 known substitute for 1643972: 405555. Substitute compatibility should be verified for your specific system.
What is the NSN for 1643972?
1643972 is cataloged in the U.S. Government catalog under NSN 4730-01-570-8963. 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.