PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

77C721964P001Transformer

Lockheed Martin Corporation Div Rms · NSN 5950-01-251-6880 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-251-6880 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-251-6880. Primary manufacturer part number: 77C721964P001.
Features
  • Transformer — FSC 5950
  • 6 verified cross-references
  • Primary manufacturer: Lockheed Martin Corporation Div Rms
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer, cataloged under National Stock Number 5950-01-251-6880, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms. This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameTransformer
FSC / FSG5950 — No Item Name Available (FSG 59)
ManufacturersLockheed Martin Corporation Div Rms (CAGE 03538); Rayco Electronic Manufacturing, Inc. Div Rayco Electronics Mfg Inc (CAGE 04620); Espey Mfg. & Electronics Corp. (CAGE 98675); Coast/advanced Chip Magnetics, Inc. (CAGE 22558); Berkshire Transformer (CAGE 89870)
Technical Specifications
ParameterValue
NSN5950-01-251-6880
Primary Part Number77C721964P001
Item NameTransformer
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2640-00-147-5160 INTERCHANGEABLE
Flap,inner Tube,pneumatic Tire
7530-01-316-1639 INTERCHANGEABLE
Folder,file,hanging
6240-01-578-105144274 INTERCHANGEABLE
Lamp,fluorescent
Detroit Diesel Corporation
Cross-Reference Index
Part NumberManufacturer
77C721964P001 PRIMARY Lockheed Martin Corporation Div Rms (USA)
77C721964P001 Rayco Electronic Manufacturing, Inc. Div Rayco Electronics Mfg Inc (USA)
GE-3P177 Espey Mfg. & Electronics Corp. (USA)
44274 Coast/advanced Chip Magnetics, Inc. (USA)
77C721964P001 Berkshire Transformer (USA)
PEI8234 Precision Electronics, Inc (USA)
Related Parts
2640-00-147-5160INTERCHANGEABLE
FLAP,INNER TUBE,PNEUMATIC TIRE
7530-01-316-1639INTERCHANGEABLE
FOLDER,FILE,HANGING
6240-01-578-1051INTERCHANGEABLE
LAMP,FLUORESCENT
44274

Frequently Asked Questions

What is NSN 5950-01-251-6880?

NSN 5950-01-251-6880 is a Transformer, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-251-6880?

NSN 5950-01-251-6880 has 6 cross-referenced part numbers: 77C721964P001 (Lockheed Martin Corporation Div Rms), 77C721964P001 (Rayco Electronic Manufacturing, Inc. Div Rayco Electronics Mfg Inc), GE-3P177 (Espey Mfg. & Electronics Corp.), 44274 (Coast/advanced Chip Magnetics, Inc.), 77C721964P001 (Berkshire Transformer) and 1 more.

What NSN replaces 5950-01-251-6880?

There are 3 known substitutes for 5950-01-251-6880: 2640-00-147-5160, 7530-01-316-1639, 6240-01-578-1051. Verify interchangeability with system specifications before substitution.

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