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Technical Data Sheet
PartsTable / MRO / 7-121
7-121 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The LOCKING DEVICE,CIRCUIT BREAKER is a the manufacturer industrial component. Key specifications include light: PROVIDED, shape: CIRCULAR, width: 0.437 INCHES NOMINAL IN, length: 1.281 INCHES NOMINAL IN, material: ALUMINUM BODY, unit_type: MONOCULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5995-00-021-7014, 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
MRO→ MRO_GENERAL→ 7-121
NSN: 5995-00-021-7014
FSC: 5995
CAGE: 21530 — SPENCER INDUSTRIES INC (USA)
SPECIFICATIONS
lightPROVIDED
shapeCIRCULAR
width0.437 INCHES NOMINAL IN
length1.281 INCHES NOMINAL IN
materialALUMINUM BODY
unit_typeMONOCULAR
body_length0.593 INCHES NOMINAL IN
carrying_caseNOT PROVIDED
lens_diameter5.000 INCHES NOMINAL IN
lens_quantity1
magnification3.5X NOMINAL
overall_width0.906 INCHES NOMINAL IN
NSN5995-00-021-7014
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LOCKING DEVICE,CIRCUIT BREAKER TITLE COMPONENT PN 7-121 MFR LOCKING DEVICE,CIRCUIT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
44623-2PC69Interchangeable
interchangeable cross-reference
interchangeable
40254-1PC58Interchangeable
interchangeable cross-reference
interchangeable
24856PC23Interchangeable
interchangeable cross-reference
interchangeable
7-12-1Interchangeable
interchangeable cross-reference
interchangeable
1C323Interchangeable
interchangeable cross-reference
interchangeable
67D11REVAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7-121?
7-121 is a LOCKING DEVICE,CIRCUIT BREAKER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 7-121?
There are 19 known substitutes for 7-121: 44623-2PC69, 40254-1PC58, 24856PC23 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7-121?
7-121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5995-00-021-7014. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026