The Window,observation, cataloged under National Stock Number 9340-01-658-1835, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-658-1835 |
| Primary Part Number | 709-8540938 ITEM 2D7 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 709-8540938 ITEM 2D7 | Naval Inventory Control Point Mechanicsburg (USA) |
| 145-8540937 ITEM 29D7 | Naval Inventory Control Point Mechanicsburg (USA) |
| 100-8500417 ITEM 8-1D7 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 145-8540937 ITEM 29 | 5/1 Secondary reference Naval Sea Systems Command |
| 709-8540938 ITEM 2 | 5/1 Secondary reference Naval Sea Systems Command |
| 100-8500417 ITEM 8-1 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 9340-01-658-1835 is a Window,observation, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-658-1835 has 3 manufacturer part numbers on file: 709-8540938 ITEM 2D7 (Naval Inventory Control Point Mechanicsburg), 145-8540937 ITEM 29D7 (Naval Inventory Control Point Mechanicsburg), 100-8500417 ITEM 8-1D7 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 709-8540938 ITEM 2D7: Criticality Code Justification: ZZZY; Part Name Assigned by Controlling Agency: BUBBLE WIND FLAT; Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 9340-01-658-1835 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.