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1643971 — ELBOW,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1643971: ELBOW,TUBE TO BOSS.

The ELBOW,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include special_features: 100 FT FIXED ACCESS NODE (FAN) CELLUAR TOWER SUITE, (PIONEER CITY 22), MODIFIED, RANGE COMMUNICATION SYSTEM (RCS) FT, end_item_identification: FIELD SIMULATOR AND TRAINING EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-570-3336, 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
1643971
NSN: 4730-01-570-3336
NIINs: 015703336, 016686664
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
special_features100 FT FIXED ACCESS NODE (FAN) CELLUAR TOWER SUITE, (PIONEER CITY 22), MODIFIED, RANGE COMMUNICATION SYSTEM (RCS) FT
end_item_identificationFIELD SIMULATOR AND TRAINING EQUIPMENT
NSN4730-01-570-3336
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1643971 · 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
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYADAPTER 1 ORSM X 3/4 ORBM 90 DEGREES
END ITEM IDENTIFICATION2320-01-522-1859 TRUCK, DUMP
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
405554Reference 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 1643971?
1643971 is a ELBOW,TUBE TO BOSS.
What parts can replace 1643971?
There is 1 known substitute for 1643971: 405554. Substitute compatibility should be verified for your specific system.
What is the NSN for 1643971?
1643971 is cataloged in the U.S. Government catalog under NSN 4730-01-570-3336. 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.