Window, Observation9340-00-641-3987

NSN 9340-00-641-3987 · NIIN 006413987

FSC 9340 — Glass Fabricated Materials · FSG 93 — Nonmetallic Fabricated Materials

Government record, cited

Also searched as 9340-00-641-3987 · 9340006413987 · NIIN 006413987 · 00-641-3987 · FSC 9340 Glass Fabricated Materials

Nearby stock numbers ← 9340-00-641-3078 · 9340-00-641-3988 Window, Observation →

Features

Window,observation — FSC 9340
Overall Diameter: 2.219 INCHES MINIMUM AND 2.281 INCHES MAXIMUM IN
Overall Thickness: 0.182 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
Material Transparency: CLEAR
Style Designator: CIRCULAR
Material Document and Classification: MIL-G-3787,CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE
Material: GLASS

Identification

NSN: 9340-00-641-3987
NIIN: 006413987
FSC: 9340 — Glass Fabricated Materials
FSG: 93 — Nonmetallic Fabricated Materials

General Description

The Window,observation, cataloged under National Stock Number 9340-00-641-3987, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	9340-00-641-3987
Item Name	Window,observation
FSC / FSG	9340 / 93 — Glass Fabricated Materials
Status	ACTIVE
Overall Diameter	2.219 INCHES MINIMUM AND 2.281 INCHES MAXIMUM IN
Overall Thickness	0.182 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
Material Transparency	CLEAR
Style Designator	CIRCULAR
Material Document and Classification	MIL-G-3787,CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE
Material	GLASS

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
1170529	3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier

No interchangeability data on file.

Other items in FSC 9340 — Glass Fabricated Materials

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

9340-00-001-2702

WINDOW,OBSERVATION

9340-00-001-3590

WINDOW,OBSERVATION

9340-00-001-3591

WINDOW,ELECTRICALL

9340-00-001-3592

WINDOW,OBSERVATION

9340-00-003-0380

WINDOW,OBSERVATION

9340-00-003-1497

9340-00-003-1497 · Item name not on file

9340-00-003-1553

9340-00-003-1553 · Item name not on file

9340-00-003-7325

9340-00-003-7325 · Item name not on file

Frequently Asked Questions

What is NSN 9340-00-641-3987?

NSN 9340-00-641-3987 is a Window,observation, classified under FSC 9340, Glass Fabricated Materials. Status: active.

What are the specifications of 9340-00-641-3987?

Key specifications for 9340-00-641-3987: Overall Diameter: 2.219 INCHES MINIMUM AND 2.281 INCHES MAXIMUM IN; Overall Thickness: 0.182 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN; Material Transparency: CLEAR; Style Designator: CIRCULAR. 6 specifications are documented in the U.S. Government catalog.

Is NSN 9340-00-641-3987 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.

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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