The Portlight, cataloged under National Stock Number 2040-00-753-3977, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2040-00-753-3977 |
| Primary Part Number | 8045184213 |
| Item Name | Portlight |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Frame Opening Diameter | 12.812 INCHES NOMINAL IN |
| Spigot | NOT INCLUDED |
| Ventilating Deadlight | NOT INCLUDED |
| Glass One Side Frosted Feature | NOT INCLUDED |
| Diameter | 12.000 INCHES NOMINAL IN |
| Frame Type | FLANGED |
| Plate Glass in Holder | INCLUDED |
| Nondefinitive Spec/std Data | B TYPE AND C TYPE |
| Glass Frame/cover Hinge Characteristics | HINGED ON OPPOSITE SIDES |
| Screen | NOT INCLUDED |
| Frame Shape | ROUND |
| Outside Finishing Ring | NOT INCLUDED |
| Frame Outside Diameter | 17.375 INCHES NOMINAL IN |
| Material | ALUMINUM COVER |
| Material | ALUMINUM HOLDER |
| Material | ALUMINUM FRAME |
| Removable Hinge Pin | INCLUDED |
| Glass Thickness | 0.750 INCHES NOMINAL IN |
| Cover | PROVIDED |
| Water Shed | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8045184213 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 8045184215 | 5/1 Secondary reference Naval Sea Systems Command |
| 8051749037 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2040-00-753-3977 is a Portlight, manufactured by Naval Sea Systems Command, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
NSN 2040-00-753-3977 has 1 manufacturer part number on file: 8045184213 (Naval Sea Systems Command).
Key specifications for 8045184213: Frame Opening Diameter: 12.812 INCHES NOMINAL IN; Spigot: NOT INCLUDED; Ventilating Deadlight: NOT INCLUDED; Glass One Side Frosted Feature: NOT INCLUDED. 20 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.
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.