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Technical Data Sheet
PartsTable / MRO / 12937
12937 ✓ 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

The GEAR ASSEMBLY,SPEED DECREASER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_length: 9.750 INCHES MINIMUM AND 10.250 INCHES MAXIMUM IN, drive_end_shape: SQUARE SECOND END EXTERNAL, special_features: LOCKING TYPE, style_designator: RIGID, features_provided: MANUAL TOOL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-273-0077, 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→ 12937
NSN: 6145-01-273-0077
FSC: 6145
CAGE: 90484 — RSCC WIRE & CABLE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_length9.750 INCHES MINIMUM AND 10.250 INCHES MAXIMUM IN
drive_end_shapeSQUARE SECOND END EXTERNAL
special_featuresLOCKING TYPE
style_designatorRIGID
features_providedMANUAL TOOL
surface_treatmentCHROMIUM OVERALL
drive_surface_size0.500 INCHES NOMINAL BOTH ENDS IN
nondefinitive_spec/std_data2 TYPE AND 2 CLASS
specification/standard_data0U583-SAE AS4283 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN6145-01-273-0077
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 12937 · 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 SHAPE STYLE: ROUND
•
CONDUCTOR QUANTITY: 28
•
COLOR CODING DOCUMENT: 407-30079-81205 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
•
MATERIAL: PLASTIC POLYOLEFIN FIRST POSITION PRIMARY INSULATION ALL CONDUCTORS
•
SURFACE TREATMENT: TIN CORE CONDUCTOR ALL CONDUCTORS
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B33 ASSN STD ALL MATERIAL RESPONSES CORE CONDUCTOR ALL CONDUCTORS
•
CONDUCTOR FORM: STRANDED ALL CONDUCTORS
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEROUND
CONDUCTOR QUANTITY28
COLOR CODING DOCUMENT407-30079-81205 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
SPECIAL FEATURESSIXTH GROUPING ARRANGEMENT ELEVENTH AND TWELFTH CONDUCTOR THROUGH FOURTEENTH GROUPING ARRANGEMENT TWENTY-SEVENTH AND TWENTY-EIGHTH CONDUCTOR. PLASTIC,POLYOLEFIN IS IRRADIATED AND CROSS-LINKED
MATERIALPLASTIC POLYOLEFIN FIRST POSITION PRIMARY INSULATION ALL CONDUCTORS
SURFACE TREATMENTTIN CORE CONDUCTOR ALL CONDUCTORS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B33 ASSN STD ALL MATERIAL RESPONSES CORE CONDUCTOR ALL CONDUCTORS
CONDUCTOR FORMSTRANDED ALL CONDUCTORS
CONDUCTOR GROUPING ARRANGEMENT TYPE AND QUANTITY14 TWISTED PAIR ALL GROUPS
ROUND CONDUCTOR SIZE22 AWG ALL CONDUCTORS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
12937Upgraded Successor
successor cross-reference
successor
DC 6250Upgraded Successor
successor cross-reference
successor
MRX 6250Upgraded Successor
successor cross-reference
successor
URF16AUpgraded Successor
successor cross-reference
successor
URF16A-VLUpgraded Successor
successor cross-reference
successor
721866-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12937?
12937 is a GEAR ASSEMBLY,SPEED DECREASER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 12937?
There are 16 known substitutes for 12937: 12937, DC 6250, MRX 6250 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12937?
12937 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-273-0077. 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