PartsTable TECHNICAL DATA SHEET
OCTOBER 2026Technical Data Sheet

13077162-501Window,optical Instrument

Lockheed Martin Corporation · NSN 1240-01-317-6447 · FSC 1240 · Optical Sighting and Ranging Equipment
Government record, cited
NSN 1240-01-317-6447 — this item is cataloged by the U.S. Government under National Stock Number 1240-01-317-6447. Primary manufacturer part number: 13077162-501.
Features
  • Window,optical Instrument — FSC 1240
  • Material Document and Classification: MIL-G-174 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
  • Diameter: 1.090 INCHES MINIMUM AND 1.092 INCHES MAXIMUM IN
  • Polished Periphery: PROVIDED
  • Width: 0.133 INCHES NOMINAL IN
  • Material: GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED
  • 2 commercial cross-references
  • Primary manufacturer: Lockheed Martin Corporation
Identification
  • NSN: 1240-01-317-6447
  • NIIN: 013176447
  • FSC: 1240 — Optical Sighting and Ranging Equipment
  • FSG: 12 — Fire Control Equipment
  • Primary part number: 13077162-501
  • Manufacturer: Lockheed Martin Corporation
General Description

The Window,optical Instrument, cataloged under National Stock Number 1240-01-317-6447, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The primary manufacturer of record is Lockheed Martin Corporation. Government technical data includes 5 specifications, cited from the U.S. Government catalog. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1240-01-317-6447
Primary Part Number13077162-501
Item NameWindow,optical Instrument
FSC / FSG1240 / 12 — Optical Sighting and Ranging Equipment
ManufacturerLockheed Martin Corporation
StatusACTIVE
Material Document and ClassificationMIL-G-174 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
Diameter1.090 INCHES MINIMUM AND 1.092 INCHES MAXIMUM IN
Polished PeripheryPROVIDED
Width0.133 INCHES NOMINAL IN
MaterialGLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED
Lifecycle & Compliance
Acquisition StatusACTIVE
HazardNot stated in government record
Cross-Reference Index
Part NumberManufacturer
13077162-501 PRIMARY Lockheed Martin Corporation (USA)
13077162-501 Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah (USA)
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
1240-01-068-6676
HOLDER,OPTICAL ELEMENT
1240-01-082-8849
SIGHT,INFINITY
1240-01-361-6090
COLLIMATOR,INFINITY AIMING REFER

Frequently Asked Questions

What is NSN 1240-01-317-6447?

NSN 1240-01-317-6447 is a Window,optical Instrument, manufactured by Lockheed Martin Corporation, classified under FSC 1240 (Optical Sighting and Ranging Equipment). Status: active.

What are the part numbers for NSN 1240-01-317-6447?

NSN 1240-01-317-6447 has 2 cross-referenced part numbers: 13077162-501 (Lockheed Martin Corporation), 13077162-501 (Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah).

What are the specifications of 13077162-501?

Key specifications for 13077162-501: Material Document and Classification: MIL-G-174 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED; Diameter: 1.090 INCHES MINIMUM AND 1.092 INCHES MAXIMUM IN; Polished Periphery: PROVIDED; Width: 0.133 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.

Is NSN 1240-01-317-6447 hazardous material?

Hazard status is not stated in the government record for NSN 1240-01-317-6447 — no DOT hazard class, UN number, or hazard classification field is present in the cited data. This page does not assert an item is or is not hazardous.

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