PartsTable
Technical Data Sheet
PartsTable / MRO / 831-2
831-2 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

MOUNTING BASE,ELECTRICAL EQUIPME. Key specifications include width: 3.152 INCHES NOMINAL IN, height: 3.150 INCHES NOMINAL IN, length: 1.260 INCHES NOMINAL IN, material: PLASTIC OVERALL, drive_type: DIRECT, air_flow_rate: 31.8 CUBIC FEET PER MINUTE NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-291-0220, 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→ 831-2
NSN: 6145-01-291-0220
FSC: 6145
CAGE: 16428 — BELDEN WIRE & CABLE COMPANY LLC DBA BELDEN CDT ELECTRONICS DIVISION (USA)
SPECIFICATIONS
width3.152 INCHES NOMINAL IN
height3.150 INCHES NOMINAL IN
length1.260 INCHES NOMINAL IN
materialPLASTIC OVERALL
drive_typeDIRECT
air_flow_rate31.8 CUBIC FEET PER MINUTE NOMINAL
flow_directionINWARD
inclosure_typeFULLY INCLOSED
prime_mover_typeELECTRIC MOTOR
style_designatorFIXED
speed_adjustmentsSINGLE SPEED
housing_inside_diameter2.815 INCHES NOMINAL IN
NSN6145-01-291-0220
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 831-2 · 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 SECTION OUTSIDE DIAMETER: 0.455 INCHES NOMINAL IN
•
STRAND QUANTITY PER CONDUCTOR: 7 ALL CONDUCTORS
•
SURFACE TREATMENT: ALUMINUM FIRST POSITION SHIELD FOIL CABLE
•
CONDUCTOR ARRANGEMENT AND QUANTITY: 1 SINGLES AND 12 TWISTED PAIR
•
STRAND AWG SIZE PER CONDUCTOR: 30 ALL CONDUCTORS
•
VOLTAGE RATING: 300.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
•
COLOR: CHROME FIRST POSITION JACKET CABLE
•
COLOR CODING DOCUMENT: 8312-16428 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
TECHNICAL CHARACTERISTICS (FLIS)
CROSS SECTION OUTSIDE DIAMETER0.455 INCHES NOMINAL IN
STRAND QUANTITY PER CONDUCTOR7 ALL CONDUCTORS
SURFACE TREATMENTALUMINUM FIRST POSITION SHIELD FOIL CABLE
CONDUCTOR ARRANGEMENT AND QUANTITY1 SINGLES AND 12 TWISTED PAIR
STRAND AWG SIZE PER CONDUCTOR30 ALL CONDUCTORS
VOLTAGE RATING300.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
COLORCHROME FIRST POSITION JACKET CABLE
COLOR CODING DOCUMENT8312-16428 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
CROSS-SECTIONAL SHAPE STYLEROUND
TEMP RATING80.0 CELSIUS DEGC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
2684523-00Upgraded Successor
successor cross-reference
successor
89-266932-1Upgraded Successor
successor cross-reference
successor
7002040-00REVCUpgraded Successor
successor cross-reference
successor
12576Upgraded Successor
successor cross-reference
successor
3-4112ATUpgraded Successor
successor cross-reference
successor
8083Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 831-2?
831-2 is a MOUNTING BASE,ELECTRICAL EQUIPME. It is classified as a MRO (MRO_GENERAL).
What parts can replace 831-2?
There are 22 known substitutes for 831-2: 2684523-00, 89-266932-1, 7002040-00REVC and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 831-2?
831-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-291-0220. 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