PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42-45Transformer,radio Frequency

Symmetricom, Inc · NSN 5950-01-197-7974 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-197-7974 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-197-7974. Primary manufacturer part number: 42-45.
Features
  • Transformer,radio Frequency — FSC 5950
  • Turn Quantity: 3 SINGLE COMPONENT SINGLE PRIMARY
  • Coil Form Type: HOLLOW SINGLE COMPONENT
  • Inclosure Type: FULLY INCLOSED
  • Mounting Method: TERMINAL SINGLE GROUP
  • Terminal Type and Quantity: 4 PIN
  • Rating Method: WINDING TURNS SINGLE COMPONENT SINGLE SECONDARY
  • Adjustment Device Drive Type: SLOTTED SCREW SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,radio Frequency, cataloged under National Stock Number 5950-01-197-7974, 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 Symmetricom, Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-197-7974
Primary Part Number42-45
Item NameTransformer,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerSymmetricom, Inc
StatusACTIVE
Turn Quantity3 SINGLE COMPONENT SINGLE PRIMARY
Coil Form TypeHOLLOW SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Mounting MethodTERMINAL SINGLE GROUP
Terminal Type and Quantity4 PIN
Rating MethodWINDING TURNS SINGLE COMPONENT SINGLE SECONDARY
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Turn Quantity10 SINGLE COMPONENT SINGLE SECONDARY
Winding Conductor Size0.00795 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Rating MethodWINDING TURNS SINGLE COMPONENT SINGLE PRIMARY
Winding Conductor Size0.00795 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN
Adjustment Method and Quantity1 ADJUSTABLE CORE SINGLE COMPONENT
Frequency Rating25.2 MEGAHERTZ NOMINAL SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-144-5183 INTERCHANGEABLE
Nozzle,spray,fluid-Emulsion
5136-00-197-93084245 INTERCHANGEABLE
Die,thread Cutting
Stanley Tools Div of Stanley Works
5360-00-316-3557 INTERCHANGEABLE
Spring,helical,extension
5950-00-329-5465 INTERCHANGEABLE
Transformer,pulse
5325-00-351-6482MPK69 INTERCHANGEABLE
Ring,retaining
Met-Pro Corporation
6640-00-494-2492 INTERCHANGEABLE
Burner,alcohol
5950-00-677-1517150A837H01 INTERCHANGEABLE
Transformer,radio Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5975-01-075-89254245 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
4410-01-084-26144245 INTERCHANGEABLE
Seal Oil Ring
Detroit Stoker Company
5930-01-131-8010 INTERCHANGEABLE
Switch,thermostatic
Cross-Reference Index
Part NumberManufacturer
42-45 Symmetricom, Inc (USA)
Related Parts
4730-00-144-5183INTERCHANGEABLE
NOZZLE,SPRAY,FLUID-EMULSION
5136-00-197-9308INTERCHANGEABLE
DIE,THREAD CUTTING
4245
5360-00-316-3557INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
5950-00-329-5465INTERCHANGEABLE
TRANSFORMER,PULSE
5325-00-351-6482INTERCHANGEABLE
RING,RETAINING
MPK69
6640-00-494-2492INTERCHANGEABLE
BURNER,ALCOHOL
5950-00-677-1517INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
150A837H01
5975-01-075-8925INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
4245
4410-01-084-2614INTERCHANGEABLE
SEAL OIL RING
4245
5930-01-131-8010INTERCHANGEABLE
SWITCH,THERMOSTATIC
5920-01-289-7619INTERCHANGEABLE
FUSEHOLDER,BLOCK
4245
3610-01-306-8983INTERCHANGEABLE
PRINTER,LINE 20000
4245

Frequently Asked Questions

What is NSN 5950-01-197-7974?

NSN 5950-01-197-7974 is a Transformer,radio Frequency, manufactured by Symmetricom, Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-197-7974?

NSN 5950-01-197-7974 has 1 cross-referenced part number: 42-45 (Symmetricom, Inc).

What NSN replaces 5950-01-197-7974?

There are 12 known substitutes for 5950-01-197-7974: 4730-00-144-5183, 5136-00-197-9308, 5360-00-316-3557 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42-45?

Key specifications for 42-45: Turn Quantity: 3 SINGLE COMPONENT SINGLE PRIMARY; Coil Form Type: HOLLOW SINGLE COMPONENT; Inclosure Type: FULLY INCLOSED; Mounting Method: TERMINAL SINGLE GROUP. 15 total characteristics are documented in the Federal Logistics Information System.

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