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BL4939 — ADAPTER,SWITCH ACTUATOR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

BL4939: ADAPTER,SWITCH ACTUATOR.

The ADAPTER,SWITCH ACTUATOR is a the manufacturer industrial component. Key specifications include mounting_method: BRACKET(S), special_features: WEAPON SYSTEM ESSENTIAL, features_provided: ADJUSTABLE, actuator_adapter_style: ROLLER ARM, criticality_code_justification: FEAT. This part is cataloged in the U.S.

Government catalog under NSN 5930-00-054-1376, 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
BL4939
NSN: 5930-00-054-1376
FSC: 5930 — Switches
CAGE: 08484 — BREEZE-EASTERN LLC (USA)
SPECIFICATIONS
mounting_methodBRACKET(S)
special_featuresWEAPON SYSTEM ESSENTIAL
features_providedADJUSTABLE
actuator_adapter_styleROLLER ARM
criticality_code_justificationFEAT
NSN5930-00-054-1376
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ADAPTER,SWITCH ACTUATOR TITLE COMPONENT PN BL4939 MFR ADAPTER,SWITCH ACTUATO
KEY FEATURES
•
MOUNTING METHOD: BRACKET(S)
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
ACTUATOR ADAPTER STYLE: ROLLER ARM
•
FEATURES PROVIDED: ADJUSTABLE
TECHNICAL CHARACTERISTICS
MOUNTING METHODBRACKET(S)
CRITICALITY CODE JUSTIFICATIONFEAT
ACTUATOR ADAPTER STYLEROLLER ARM
FEATURES PROVIDEDADJUSTABLE
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
SUBSTITUTES & CROSS-REFERENCES 1
JS51Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BL4939?
BL4939 is a ADAPTER,SWITCH ACTUATOR.
What parts can replace BL4939?
There is 1 known substitute for BL4939: JS51. Substitute compatibility should be verified for your specific system.
What is the NSN for BL4939?
BL4939 is cataloged in the U.S. Government catalog under NSN 5930-00-054-1376. 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.