PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5-1-661Flag,unique Organizations

Army Institute of Heraldry This Is an Original Design Activity Not a Mfr · NSN 8340-01-590-2100 · FSC 8340 · No Item Name Available
Verified by PartsTable
NSN 8340-01-590-2100 — this item is cataloged by the U.S. Government under National Stock Number 8340-01-590-2100. Primary manufacturer part number: 5-1-661.
Features
  • Flag,unique Organizations — FSC 8340
  • 2 verified cross-references
  • Primary manufacturer: Army Institute of Heraldry This Is an Original Design Activity Not a Mfr
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Flag,unique Organizations, cataloged under National Stock Number 8340-01-590-2100, is classified within Federal Supply Class 8340 (No Item Name Available) of the Textiles, Leather, Furs, Apparel, Shoes, Tents group. The primary manufacturer of record is Army Institute of Heraldry This Is an Original Design Activity Not a Mfr. This item has 2 commercial cross-references from 2 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
NSN8340-01-590-2100
Primary Part Number5-1-661
Item NameFlag,unique Organizations
FSC / FSG8340 / 83 — No Item Name Available
ManufacturerArmy Institute of Heraldry This Is an Original Design Activity Not a Mfr
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3040-00-313-287851-6-61 INTERCHANGEABLE
Shaft,coupling
Allard Nazarian Group, Inc. Dba Granite State Manufacturing
5935-00-908-01755166-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
3455-01-033-6395 INTERCHANGEABLE
File,rotary
Cross-Reference Index
Part NumberManufacturer
5-1-661 Army Institute of Heraldry This Is an Original Design Activity Not a Mfr (USA)
MIL-F-2692 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3040-00-313-2878INTERCHANGEABLE
SHAFT,COUPLING
51-6-61
5935-00-908-0175INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5166-1
3455-01-033-6395INTERCHANGEABLE
FILE,ROTARY

Frequently Asked Questions

What is NSN 8340-01-590-2100?

NSN 8340-01-590-2100 is a Flag,unique Organizations, manufactured by Army Institute of Heraldry This Is an Original Design Activity Not a Mfr, classified under FSC 8340 (No Item Name Available). Status: active.

What are the part numbers for NSN 8340-01-590-2100?

NSN 8340-01-590-2100 has 2 cross-referenced part numbers: 5-1-661 (Army Institute of Heraldry This Is an Original Design Activity Not a Mfr), MIL-F-2692 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 8340-01-590-2100?

There are 3 known substitutes for 8340-01-590-2100: 3040-00-313-2878, 5935-00-908-0175, 3455-01-033-6395. Verify interchangeability with system specifications before substitution.

What are the specifications of 5-1-661?

Key specifications for 5-1-661: Part Name Assigned by Controlling Agency: FLAG, UNIQUE ORGANIZATIONS; Special Features: 3FT X 4FT; BLANK FLAG IN ACCORDANCE WITH MIL-F-2692 AND DRAWING 5-1-661 FT. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com