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NSN 1240-01-187-1085Government record, cited

Retainer, Optical Element1240-01-187-1085

NSN 1240-01-187-1085 · NIIN 011871085 · Part number 12337485
U S Army Tank Automotive Command Amsta-Im-Mm · FSC 1240 — Optical Sighting and Ranging Equipment · FSG 12 — Fire Control Equipment · CAGE 19207
Government record, cited
NSN 1240-01-187-1085 — this item is cataloged by the U.S. Government under National Stock Number 1240-01-187-1085. Manufacturer of record part number: 12337485.
Also searched as  1240-01-187-1085 · 1240011871085 · NIIN 011871085 · 01-187-1085 · FSC 1240 Optical Sighting and Ranging Equipment · CAGE 19207 · 12337485 · A11900
Nearby stock numbers  ·
Features
  • Retainer,optical Element — FSC 1240
  • Hole or Slot Quantity: 12
  • Drive Type: DRILLED HOLE
  • Setscrew Notch: NOT PROVIDED
  • Recess Depth: 1.190 INCHES NOMINAL IN
  • Recess Diameter: 2.190 INCHES NOMINAL IN
  • Surface Treatment: ENAMEL
  • Internal Annular Serration: NOT PROVIDED
Identification
  • NSN: 1240-01-187-1085
  • NIIN: 011871085
  • FSC: 1240 — Optical Sighting and Ranging Equipment
  • FSG: 12 — Fire Control Equipment
  • Primary part number: 12337485
  • Manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm
General Description

The Retainer,optical Element, cataloged under National Stock Number 1240-01-187-1085, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1240-01-187-1085
Primary Part Number12337485
Item NameRetainer,optical Element
FSC / FSG1240 / 12 — Optical Sighting and Ranging Equipment
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusACTIVE
Hole or Slot Quantity12
Drive TypeDRILLED HOLE
Setscrew NotchNOT PROVIDED
Recess Depth1.190 INCHES NOMINAL IN
Recess Diameter2.190 INCHES NOMINAL IN
Surface TreatmentENAMEL
Internal Annular SerrationNOT PROVIDED
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL B — Remove Demilitarization Key Points
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
12337485 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
12337485 Elc Industries Corp. Dba Aurora Defense Group Div Aurora Defense Group (USA)
A11900 Autodyne Manufacturing Co Inc (USA)
12337485 Spectron Inc (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 1240-01-187-1085?

NSN 1240-01-187-1085 is a Retainer,optical Element, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.

What part numbers are listed for NSN 1240-01-187-1085?

NSN 1240-01-187-1085 has 4 manufacturer part numbers on file: 12337485 (U S Army Tank Automotive Command Amsta-Im-Mm), 12337485 (Elc Industries Corp. Dba Aurora Defense Group Div Aurora Defense Group), A11900 (Autodyne Manufacturing Co Inc), 12337485 (Spectron Inc).

What are the specifications of 12337485?

Key specifications for 12337485: Hole or Slot Quantity: 12; Drive Type: DRILLED HOLE; Setscrew Notch: NOT PROVIDED; Recess Depth: 1.190 INCHES NOMINAL IN. 8 specifications are documented in the U.S. Government catalog.

Is NSN 1240-01-187-1085 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

What is the DEMIL code for NSN 1240-01-187-1085?

NSN 1240-01-187-1085 has DEMIL Code B. 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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