PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

535921Transformer,audio Frequency

Instruments and Flight Research, Inc. · NSN 5950-00-702-0991 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-702-0991 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-702-0991. Primary manufacturer part number: 535921.
Features
  • Transformer,audio Frequency — FSC 5950
  • 3 verified cross-references
  • Primary manufacturer: Instruments and Flight Research, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-702-0991, 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 Instruments and Flight Research, Inc.. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-702-0991
Primary Part Number535921
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerInstruments and Flight Research, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-00-106-3666 INTERCHANGEABLE
Resistor,fixed,composition
5340-01-013-9972SS015 INTERCHANGEABLE
Handle,bow
Vemaline Products Inc Dba Handles Unlimited Div Handles Unlimited
5130-01-585-55725359-21 INTERCHANGEABLE
Hammer,rotary,electric,portable
Milwaukee Electric Tool Corp Dba Milwaukee Electric Tools
Cross-Reference Index
Part NumberManufacturer
SS015 United Transformer Corp Sub of Opt Industries Inc (USA)
SS015 Magnetika Inc (USA)
535921 PRIMARY Instruments and Flight Research, Inc. (USA)
Related Parts
5905-00-106-3666INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
5340-01-013-9972INTERCHANGEABLE
HANDLE,BOW
SS015
5130-01-585-5572INTERCHANGEABLE
HAMMER,ROTARY,ELECTRIC,PORTABLE
5359-21

Frequently Asked Questions

What is NSN 5950-00-702-0991?

NSN 5950-00-702-0991 is a Transformer,audio Frequency, manufactured by Instruments and Flight Research, Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-702-0991?

NSN 5950-00-702-0991 has 3 cross-referenced part numbers: SS015 (United Transformer Corp Sub of Opt Industries Inc), SS015 (Magnetika Inc), 535921 (Instruments and Flight Research, Inc.).

What NSN replaces 5950-00-702-0991?

There are 3 known substitutes for 5950-00-702-0991: 5905-00-106-3666, 5340-01-013-9972, 5130-01-585-5572. Verify interchangeability with system specifications before substitution.

What are the specifications of 535921?

Key specifications for 535921: End Item Identification: F-4B AIRCRAFT WEAPON SYSTEM TRAINER. 1 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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