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Technical Data Sheet
PartsTable / COMPONENT / M49055/12-21
M49055/12-21 ✓ Verified by PartsTable
— · WIRE CABLE
WHAT YOU NEED TO KNOW
Stranded for flexible routing, solid for conduit THHN/THWN dual-rated — check both tables
Ampacity depends on installation method
PRODUCT OVERVIEW

The M49055/12-21 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-333-6580, 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
M49055/12-21
NSN: 6145-01-333-6580
FSC: 6145
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM49055/12-21
NSN6145-01-333-6580
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: M49055/12-21 · OEM ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL WIDTH: 1.000 INCHES NOMINAL IN
•
PRECIOUS MATERIAL: SILVER
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
STRAND AWG SIZE PER CONDUCTOR: 34 ALL CONDUCTORS
•
SURFACE TREATMENT: SILVER CORE CONDUCTOR ALL CONDUCTORS
•
MATERIAL: COPPER CORE CONDUCTOR ALL CONDUCTORS
•
CONDUCTOR FORM: STRANDED ALL CONDUCTORS
•
CONDUCTOR ARRANGEMENT AND QUANTITY: 20 MOLDED TOGETHER W/NO OUTER COVERING
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL WIDTH1.000 INCHES NOMINAL IN
PRECIOUS MATERIALSILVER
CROSS-SECTIONAL SHAPE STYLEFLAT
STRAND AWG SIZE PER CONDUCTOR34 ALL CONDUCTORS
SURFACE TREATMENTSILVER CORE CONDUCTOR ALL CONDUCTORS
MATERIALCOPPER CORE CONDUCTOR ALL CONDUCTORS
CONDUCTOR FORMSTRANDED ALL CONDUCTORS
CONDUCTOR ARRANGEMENT AND QUANTITY20 MOLDED TOGETHER W/NO OUTER COVERING
CONDUCTOR QUANTITY20
TEMP RATING200.0 CELSIUS DEGC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
MIL-C-49055/12Upgraded Successor
successor cross-reference
successor
M49055/12-12JUpgraded Successor
successor cross-reference
successor
MIL-DTL-49055/12Upgraded Successor
successor cross-reference
successor
M49055/12-03JInterchangeable
interchangeable cross-reference
interchangeable
6145PL0836371Interchangeable
interchangeable cross-reference
interchangeable
M49055/12-01Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M49055/12-21?
M49055/12-21 is a M49055/12-21.
What parts can replace M49055/12-21?
There are 18 known substitutes for M49055/12-21: MIL-C-49055/12, M49055/12-12J, MIL-DTL-49055/12 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M49055/12-21?
M49055/12-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-333-6580. 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