PartsTable TECHNICAL DATA SHEET
NSN 1240-01-237-1581Government record, cited

Telescope Subassembly1240-01-237-1581

NSN 1240-01-237-1581 · NIIN 012371581 · Part number 5006404
Dept of the Army U S Army Electronics Command Night Vision Laboratory · FSC 1240 — Optical Sighting and Ranging Equipment · FSG 12 — Fire Control Equipment · CAGE 54490
Government record, cited
NSN 1240-01-237-1581 — this item is cataloged by the U.S. Government under National Stock Number 1240-01-237-1581. Manufacturer of record part number: 5006404.
Also searched as  1240-01-237-1581 · 1240012371581 · NIIN 012371581 · 01-237-1581 · FSC 1240 Optical Sighting and Ranging Equipment · CAGE 54490 · 5006404
Nearby stock numbers  ·
Features
  • Telescope Subassembly — FSC 1240
  • 1 manufacturer part number on file
  • Manufacturer of record: Dept of the Army U S Army Electronics Command Night Vision Laboratory
Identification
  • NSN: 1240-01-237-1581
  • NIIN: 012371581
  • FSC: 1240 — Optical Sighting and Ranging Equipment
  • FSG: 12 — Fire Control Equipment
  • Primary part number: 5006404
  • Manufacturer: Dept of the Army U S Army Electronics Command Night Vision Laboratory
General Description

The Telescope Subassembly, cataloged under National Stock Number 1240-01-237-1581, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Dept of the Army U S Army Electronics Command Night Vision Laboratory. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1240-01-237-1581
Primary Part Number5006404
Item NameTelescope Subassembly
FSC / FSG1240 / 12 — Optical Sighting and Ranging Equipment
ManufacturerDept of the Army U S Army Electronics Command Night Vision Laboratory
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL F — Mutilate — Cut
HazardHazardous per DLA record (HMIC Y)
Criticality CodeN
Cross-Reference Index
Part NumberManufacturer
5006404 PRIMARY Dept of the Army U S Army Electronics Command Night Vision Laboratory (USA)
No interchangeability data on file.
Other items in FSC 1240 — Optical Sighting and Ranging Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1240-00-764-4734
SUNSHADE
1240-00-987-5071
1240-00-987-5071 · Item name not on file
1240-01-068-6676
HOLDER,OPTICAL ELEMENT
1240-01-082-8849
SIGHT,INFINITY
1240-01-090-0609
1240-01-090-0609 · Item name not on file
1240-01-102-4266
1240-01-102-4266 · Item name not on file
1240-01-110-9897
1240-01-110-9897 · Item name not on file
1240-01-361-6090
COLLIMATOR,INFINITY AIMING REFER

Frequently Asked Questions

What is NSN 1240-01-237-1581?

NSN 1240-01-237-1581 is a Telescope Subassembly, manufactured by Dept of the Army U S Army Electronics Command Night Vision Laboratory, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.

What part numbers are listed for NSN 1240-01-237-1581?

NSN 1240-01-237-1581 has 1 manufacturer part number on file: 5006404 (Dept of the Army U S Army Electronics Command Night Vision Laboratory).

What are the specifications of 5006404?

Key specifications for 5006404: Special Features: FOCAL BRACKET ASSY 1,SWITCHING CELL ASSY 1,FOCAL CELL ASSY 1,SWITCHING LINK ASSY 1,LINK ASSY-LEFT FOCUS 1,LINK ASSY-RIGHT FOCUS 1,STOP SWITCHING HSG 1,SHAFT HELICAL GEAR 1,SHAFT HELICAL GEAR DRIVE 1,RETAINER BEARING 1,LINK DRIVE FOCUS 1,LENS NO. 5 IR; End Item Identification: M60A3TTS,AN/VSG-2 (A) OPE. 0 specifications are documented in the U.S. Government catalog.

Is NSN 1240-01-237-1581 hazardous material?

Hazardous per DLA record (HMIC Y). Hazard information on this page is shown exactly as it appears in the DLA record.

What is the DEMIL code for NSN 1240-01-237-1581?

NSN 1240-01-237-1581 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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