PartsTable
Technical Data Sheet

21337/1 — COUPLER,DIRECTIONAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

21337/1: COUPLER,DIRECTIONAL.

The COUPLER,DIRECTIONAL is a the manufacturer industrial component. Key specifications include special_features: THIS IS PART OF THE MODIFIED ROTARY JOINT FOR THE ARSR-4 RADAR SYSTEM, end_item_identification: AIRROUTE SURVEILLANCE RADAR, 4 (ARSR-4). This part is cataloged in the U.S.

Government catalog under NSN 1650-01-397-5291, 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
21337/1
NSN: 1650-01-397-5291
NIINs: 013975291, 016056015
FSC: 1650 — Aircraft Hydraulic, Vacuum, and De-icing System Components
CAGE: 99167 — HAMILTON SUNDSTRAND CORPORATION (USA)
SPECIFICATIONS
special_featuresTHIS IS PART OF THE MODIFIED ROTARY JOINT FOR THE ARSR-4 RADAR SYSTEM
end_item_identificationAIRROUTE SURVEILLANCE RADAR, 4 (ARSR-4)
NSN1650-01-397-5291
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLER,DIRECTIONAL TITLE COMPONENT PN 21337/1 MFR COUPLER,DIRECTIONAL
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESNHA IS HYDRAULIC SERVOVALVE,NSN 1650-01-278-3311;SHUT-OFF SLEEVE FOR A HYRAULIC MOTOR CONTROL ASSEMBLY
END ITEM IDENTIFICATIONWEAPONS SYSTEM, B-1B AIRCRAFT
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)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 21337/1?
21337/1 is a COUPLER,DIRECTIONAL.
What is the NSN for 21337/1?
21337/1 is cataloged in the U.S. Government catalog under NSN 1650-01-397-5291. 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.