PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1891Transformer,radio Frequency

Precision Electronics, Inc · NSN 5950-00-648-0777 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-648-0777 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-648-0777. Primary manufacturer part number: 1891.
Features
  • Transformer,radio Frequency — FSC 5950
  • Winding Function and Quantity: 1 PRIMARY SINGLE COMPONENT
  • Inclosure Type: FULLY INCLOSED
  • Body Length: 0.601 INCHES NOMINAL IN
  • Reliability Indicator: NOT ESTABLISHED
  • Nominal Thread Size: 0.250 INCHES SINGLE GROUP IN
  • Terminal Type and Quantity: 3 SOLDER STUD
  • Body Outside Diameter: 0.572 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-648-0777, 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 Precision Electronics, Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-648-0777
Primary Part Number1891
Item NameTransformer,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerPrecision Electronics, Inc
StatusCANCELLED
Winding Function and Quantity1 PRIMARY SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Body Length0.601 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Nominal Thread Size0.250 INCHES SINGLE GROUP IN
Terminal Type and Quantity3 SOLDER STUD
Body Outside Diameter0.572 INCHES NOMINAL IN
Mounting MethodTHREADED BUSHING SINGLE GROUP
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE PRIMARY
Thread Quantity Per Inch32 SINGLE GROUP
Frequency Rating200.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Thread Series DesignatorUNEF SINGLE GROUP
Coil Form TypeHOLLOW SINGLE COMPONENT
Adjustment Method and Quantity1 ADJUSTABLE CORE SINGLE COMPONENT
Inductance Rating716.00 MICROHENRIES NOMINAL AND 2.32 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-001-4183 INTERCHANGEABLE
Control,positioner
5935-00-201-23381891 INTERCHANGEABLE
Jack,tip
Entron Industries Limited Partnership Dba Entron Industries Property Div
5999-00-264-7968591B1-1 INTERCHANGEABLE
Cap,electrical
Cardwell Condenser Corp Lapointe-Admiral Div
4820-00-367-4867189-1 INTERCHANGEABLE
Cock,drain
Dresser Industries Inc Leroi Div
5360-00-455-71471891 INTERCHANGEABLE
Spring,helical,compression
Thompson Emery Machine & Supply Co
5331-00-515-55584036D28 INTERCHANGEABLE
O-Ring
Curtiss-Wright Controls, Inc. Div Actuation Division
6240-00-770-33721891 INTERCHANGEABLE
Lamp,incandescent
Gte Products Corp Sylvania Miniature Lighting Div
5935-00-814-5835GC810A8B INTERCHANGEABLE
Connector,plug,electrical
Northrop Grumman Systems Corporation
4820-00-969-27001891 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5950-01-216-466614059 INTERCHANGEABLE
Transformer,power
Magnespec Inc
Cross-Reference Index
Part NumberManufacturer
1891 Precision Electronics, Inc (USA)
910046-514 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
C746104-31 Rca Corp Distributor and Special Products Div
Related Parts
6685-00-001-4183INTERCHANGEABLE
CONTROL,POSITIONER
5935-00-201-2338INTERCHANGEABLE
JACK,TIP
1891
5999-00-264-7968INTERCHANGEABLE
CAP,ELECTRICAL
591B1-1
4820-00-367-4867INTERCHANGEABLE
COCK,DRAIN
189-1
5360-00-455-7147INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1891
5331-00-515-5558INTERCHANGEABLE
O-RING
4036D28
6240-00-770-3372INTERCHANGEABLE
LAMP,INCANDESCENT
1891
5935-00-814-5835INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
GC810A8B
4820-00-969-2700INTERCHANGEABLE
SEAT,VALVE
1891
5950-01-216-4666INTERCHANGEABLE
TRANSFORMER,POWER
14059
6750-01-379-7328INTERCHANGEABLE
PAPER,PHOTOGRAPHIC
5310-01-491-8812INTERCHANGEABLE
WASHER,FLAT
1891

Frequently Asked Questions

What is NSN 5950-00-648-0777?

NSN 5950-00-648-0777 is a Transformer,radio Frequency, manufactured by Precision Electronics, Inc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-648-0777?

NSN 5950-00-648-0777 has 3 cross-referenced part numbers: 1891 (Precision Electronics, Inc), 910046-514 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), C746104-31 (Rca Corp Distributor and Special Products Div).

What NSN replaces 5950-00-648-0777?

There are 12 known substitutes for 5950-00-648-0777: 6685-00-001-4183, 5935-00-201-2338, 5999-00-264-7968 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1891?

Key specifications for 1891: Winding Function and Quantity: 1 PRIMARY SINGLE COMPONENT; Inclosure Type: FULLY INCLOSED; Body Length: 0.601 INCHES NOMINAL IN; Reliability Indicator: NOT ESTABLISHED. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-648-0777 still in active supply?

NSN 5950-00-648-0777 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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