PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

203566Retainer,spring,val

Valcor Engineering Corporation · NSN 1650-00-328-3683 · FSC 1650 · No Item Name Available
Verified by PartsTable
NSN 1650-00-328-3683 — this item is cataloged by the U.S. Government under National Stock Number 1650-00-328-3683. Primary manufacturer part number: 203566.
Features
  • Retainer,spring,val — FSC 1650
  • 2 verified cross-references
  • Primary manufacturer: Valcor Engineering Corporation
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Retainer,spring,val, cataloged under National Stock Number 1650-00-328-3683, is classified within Federal Supply Class 1650 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Valcor Engineering Corporation. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRetainer,spring,val
FSC / FSG1650 — No Item Name Available (FSG 16)
ManufacturersValcor Engineering Corporation (CAGE 96487); Kidde-Fenwal, Llc (CAGE 0KDP7)
Technical Specifications
ParameterValue
NSN1650-00-328-3683
Primary Part Number203566
Item NameRetainer,spring,val
FSC / FSG1650 / 16 — No Item Name Available
ManufacturerValcor Engineering Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5305-00-774-3918203566 INTERCHANGEABLE
Screw,machine
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5950-01-131-643740003760 INTERCHANGEABLE
Filament
Avox Systems Inc Dba Avox Systems Inc
Cross-Reference Index
Part NumberManufacturer
203566 PRIMARY Valcor Engineering Corporation (USA)
203566 Kidde-Fenwal, Llc (USA)
Related Parts
5305-00-774-3918INTERCHANGEABLE
SCREW,MACHINE
203566
5950-01-131-6437INTERCHANGEABLE
FILAMENT
40003760

Frequently Asked Questions

What is NSN 1650-00-328-3683?

NSN 1650-00-328-3683 is a Retainer,spring,val, manufactured by Valcor Engineering Corporation, classified under FSC 1650 (No Item Name Available). Status: active.

What are the part numbers for NSN 1650-00-328-3683?

NSN 1650-00-328-3683 has 2 cross-referenced part numbers: 203566 (Valcor Engineering Corporation), 203566 (Kidde-Fenwal, Llc).

What NSN replaces 1650-00-328-3683?

There are 2 known substitutes for 1650-00-328-3683: 5305-00-774-3918, 5950-01-131-6437. Verify interchangeability with system specifications before substitution.

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