The Window,observation, cataloged under National Stock Number 9340-00-400-2958, is classified within Federal Supply Class 9340 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-00-400-2958 |
| Primary Part Number | MILG2857 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Environmental Protection | WEATHER RESISTANT |
| Surface Finish | POLISHED |
| Edge Type | FLAT FINISH |
| Material | GLASS |
| Hardness Rating | 1800.0 MOHS NOMINAL |
| Style Designator | SQUARE CORNERS |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SYMBOL 12-17 |
| Material Document and Classification | DD-G-451,TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE |
| Material Transparency | CLEAR |
| Temp at Maximum Operating Pressure | 150.0 FAHRENHEIT DEGF |
| Ply Quantity | 4 |
| Overall Thickness | 1.740 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MILG2857 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| KS11678A | Bae Systems Information and Electronic Systems Integration I Dba Es Marine Systems (USA) |
| KS11678ASYM12 17 | Bae Systems Information and Electronic Systems Integration I Dba Es Marine Systems (USA) |
NSN 9340-00-400-2958 is a Window,observation, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 9340 (No Item Name Available). Status: active.
NSN 9340-00-400-2958 has 3 cross-referenced part numbers: MILG2857 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), KS11678A (Bae Systems Information and Electronic Systems Integration I Dba Es Marine Systems), KS11678ASYM12 17 (Bae Systems Information and Electronic Systems Integration I Dba Es Marine Systems).
There are 12 known substitutes for 9340-00-400-2958: 9340-00-054-9084, 9340-00-211-6055, 9340-00-214-8778 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for MILG2857: Environmental Protection: WEATHER RESISTANT; Surface Finish: POLISHED; Overall Length: 29.375 INCHES NOMINAL IN; Edge Type: FLAT FINISH. 15 total characteristics are documented in the Federal Logistics Information System.