PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

607-21Transformer,audio Frequency

Velco Products Div Virginia Electronics Co Inc · NSN 5950-00-910-4933 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-910-4933 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-910-4933. Primary manufacturer part number: 607-21.
Features
  • Transformer,audio Frequency — FSC 5950
  • Impedance Rating in Ohms: 7500.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
  • Mounting Hole Diameter: 0.188 INCHES NOMINAL SINGLE GROUP IN
  • Maximum Transformer Power Rating: 10.0 DECIBELS SINGLE COMPONENT
  • Frequency Rating: 300.0 HERTZ MINIMUM AND 4.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Body Width: 2.125 INCHES NOMINAL IN
  • Terminal Type and Quantity: 5 WIRE LEAD
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-910-4933, 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 Velco Products Div Virginia Electronics Co Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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.

Technical Specifications
ParameterValue
NSN5950-00-910-4933
Primary Part Number607-21
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerVelco Products Div Virginia Electronics Co Inc
StatusACTIVE
Impedance Rating in Ohms7500.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Mounting Hole Diameter0.188 INCHES NOMINAL SINGLE GROUP IN
Maximum Transformer Power Rating10.0 DECIBELS SINGLE COMPONENT
Frequency Rating300.0 HERTZ MINIMUM AND 4.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Body Width2.125 INCHES NOMINAL IN
Terminal Type and Quantity5 WIRE LEAD
Body Length3.125 INCHES NOMINAL IN
Mounting Facility Quantity2 SINGLE GROUP
Distance Between Mounting Facility Centers2.813 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Impedance Rating in Ohms50.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Reliability IndicatorNOT ESTABLISHED
Body Height2.000 INCHES NOMINAL IN
Inclosure TypeOPEN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-235-4066 INTERCHANGEABLE
Elbow,tube
4710-00-423-062260721 INTERCHANGEABLE
Pipe
Jenny Products, Inc
6685-00-444-6500BD220 INTERCHANGEABLE
Thermometer,self-Indicating,bime
Sigma Products & Mfg
3455-01-012-100550-10018 INTERCHANGEABLE
Reamer,machine
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
6685-01-222-97086072-1 INTERCHANGEABLE
Thermometer,self-Indicating,bime
Figgie International Inc Taylor Environmental Instruments Div
4820-01-320-818060B-721-01 INTERCHANGEABLE
Valve,globe
Aalberts Integrated Piping Systems Americas, Inc.
4130-01-533-183260721 INTERCHANGEABLE
Vacu Shroud,multi P
Dcm Clean Air Products, Inc.
Cross-Reference Index
Part NumberManufacturer
607-21 Velco Products Div Virginia Electronics Co Inc (USA)
607-21 Transformer Technicians Inc (USA)
Related Parts
4730-00-235-4066INTERCHANGEABLE
ELBOW,TUBE
4710-00-423-0622INTERCHANGEABLE
PIPE
60721
6685-00-444-6500INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
BD220
3455-01-012-1005INTERCHANGEABLE
REAMER,MACHINE
50-10018
6685-01-222-9708INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
6072-1
4820-01-320-8180INTERCHANGEABLE
VALVE,GLOBE
60B-721-01
4130-01-533-1832INTERCHANGEABLE
VACU SHROUD,MULTI P
60721

Frequently Asked Questions

What is NSN 5950-00-910-4933?

NSN 5950-00-910-4933 is a Transformer,audio Frequency, manufactured by Velco Products Div Virginia Electronics Co Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-910-4933?

NSN 5950-00-910-4933 has 2 cross-referenced part numbers: 607-21 (Velco Products Div Virginia Electronics Co Inc), 607-21 (Transformer Technicians Inc).

What NSN replaces 5950-00-910-4933?

There are 7 known substitutes for 5950-00-910-4933: 4730-00-235-4066, 4710-00-423-0622, 6685-00-444-6500 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 607-21?

Key specifications for 607-21: Impedance Rating in Ohms: 7500.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY; Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP; Mounting Hole Diameter: 0.188 INCHES NOMINAL SINGLE GROUP IN; Maximum Transformer Power Rating: 10.0 DECIBELS SINGLE COMPONENT. 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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