PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

E4877G1Bearing Assy

Century Electric Inc · NSN 3120-00-337-6992 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-337-6992 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-337-6992. Primary manufacturer part number: E4877G1.
Features
  • Bearing Assy — FSC 3120
  • 2 verified cross-references
  • Primary manufacturer: Century Electric Inc
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing Assy, cataloged under National Stock Number 3120-00-337-6992, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Century Electric Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBearing Assy
FSC / FSG3120 — No Item Name Available (FSG 31)
ManufacturersCentury Electric Inc (CAGE 11349); National Metalcrafters Inc (CAGE 07806)
Technical Specifications
ParameterValue
NSN3120-00-337-6992
Primary Part NumberE4877G1
Item NameBearing Assy
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerCentury Electric Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4820-00-141-91801286-5 INTERCHANGEABLE
Valve Asy,fuel,sele
Hydro-Aire Aerospace Corp
5950-00-467-1461ST5M1324-001 INTERCHANGEABLE
Transformer,power Autotransforme
The Boeing Company Div Defense
5920-01-059-08822S5012 INTERCHANGEABLE
Fuseholder Subassembly
Caterpillar Inc Div Caterpillar Defense
6150-01-175-610612865 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
6130-01-292-077012865 INTERCHANGEABLE
Power Supply
Rantec Power Systems Inc. Dba Rantec Power Systems
6650-01-323-052612-865 INTERCHANGEABLE
Collimator,infrared
Rockwell Collins Optronics Inc. Div Collins Aerospace - Mission Systems
6240-01-419-5274 INTERCHANGEABLE
Lamp,fluorescent
Cross-Reference Index
Part NumberManufacturer
E4877G1 Century Electric Inc (USA)
12865 National Metalcrafters Inc (USA)
Related Parts
4820-00-141-9180INTERCHANGEABLE
VALVE ASY,FUEL,SELE
1286-5
5950-00-467-1461INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
ST5M1324-001
5920-01-059-0882INTERCHANGEABLE
FUSEHOLDER SUBASSEMBLY
2S5012
6150-01-175-6106INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
12865
6130-01-292-0770INTERCHANGEABLE
POWER SUPPLY
12865
6650-01-323-0526INTERCHANGEABLE
COLLIMATOR,INFRARED
12-865
6240-01-419-5274INTERCHANGEABLE
LAMP,FLUORESCENT

Frequently Asked Questions

What is NSN 3120-00-337-6992?

NSN 3120-00-337-6992 is a Bearing Assy, manufactured by Century Electric Inc, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-337-6992?

NSN 3120-00-337-6992 has 2 cross-referenced part numbers: E4877G1 (Century Electric Inc), 12865 (National Metalcrafters Inc).

What NSN replaces 3120-00-337-6992?

There are 7 known substitutes for 3120-00-337-6992: 4820-00-141-9180, 5950-00-467-1461, 5920-01-059-0882 and 4 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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