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Technical Data Sheet
PartsTable / COMPONENT / MIL-B-81757
MIL-B-81757 ✓ 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 CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON, plate_type: NEGATIVE AND POSITIVE, construction: SOLID, cell_quantity: 12, overall_width: 271.7 MILLIMETERS MAXIMUM MM, terminal_type: ELECON CONNECTOR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6150-00-125-6955, 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
MIL-B-81757
NSN: 6150-00-125-6955
FSC: 6150
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
plate_typeNEGATIVE AND POSITIVE
constructionSOLID
cell_quantity12
overall_width271.7 MILLIMETERS MAXIMUM MM
terminal_typeELECON CONNECTOR
component_nameSTORAGE BATTERY
overall_height263.0 MILLIMETERS MAXIMUM MM
overall_length309.0 MILLIMETERS MAXIMUM MM
mounting_methodBOX
battery_quantity19
case_design_typeSEALED
NSN6150-00-125-6955
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: MIL-B-81757 · 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
•
MOUNTING CONFIGURATION: TWO 0.178 IN. DIA HOLES 1.080 IN. C TO C IN
•
CROSS-SECTIONAL WIDTH: 0.500 INCHES NOMINAL IN
•
MATERIAL: COPPER
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-502 FED SPEC SINGLE MATERIAL RESPONSE
•
BODY CROSS-SECTIONAL SHAPE: RECTANGULAR W/EDGE RADIUS
•
CONSTRUCTION: SOLID
•
CROSS-SECTIONAL HEIGHT: 0.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING CONFIGURATIONTWO 0.178 IN. DIA HOLES 1.080 IN. C TO C IN
CROSS-SECTIONAL WIDTH0.500 INCHES NOMINAL IN
MATERIALCOPPER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-502 FED SPEC SINGLE MATERIAL RESPONSE
BODY CROSS-SECTIONAL SHAPERECTANGULAR W/EDGE RADIUS
OVERALL LENGTH1.705 INCHES NOMINAL IN
CONSTRUCTIONSOLID
CROSS-SECTIONAL HEIGHT0.062 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-N-290, CLASS 1, TYPE 5 FED SPEC SINGLE TREATMENT RESPONSE
SURFACE TREATMENTNICKEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
MS27308Interchangeable
interchangeable cross-reference
interchangeable
MIL-B-26220Interchangeable
interchangeable cross-reference
interchangeable
MS27308-1Interchangeable
interchangeable cross-reference
interchangeable
VNC22Interchangeable
interchangeable cross-reference
interchangeable
MS90321-78Interchangeable
interchangeable cross-reference
interchangeable
MIL-B-81757Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-B-81757?
MIL-B-81757 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace MIL-B-81757?
There are 26 known substitutes for MIL-B-81757: MS27308, MIL-B-26220, MS27308-1 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-B-81757?
MIL-B-81757 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6150-00-125-6955. 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