The Window,observation, cataloged under National Stock Number 9340-01-273-3976, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Technical Wire Products, Llc Dba Twp. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-01-273-3976 |
| Primary Part Number | 71-91090A |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Technical Wire Products, Llc Dba Twp |
| Status | ACTIVE |
| Fourth Corner Radius | 0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| First Corner Radius | 0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Second Corner Radius | 0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Overall Thickness | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Material Transparency | CLEAR |
| Style Designator | ROUNDED CORNERS |
| Material Document and Classification | DD-G-451 FED SPEC SINGLE MATERIAL RESPONSE |
| Edge Type | FLAT FINISH |
| Ply Quantity | 2 |
| Color | GRAY/GREY |
| Material | GLASS |
| Third Corner Radius | 0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Wire Mesh Pattern | SQUARE |
| 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 |
|---|---|
| 71-91090A PRIMARY | Technical Wire Products, Llc Dba Twp (USA) |
| Reference | Meaning |
|---|---|
| 101152-003 | 5/9 Secondary reference M G Tool Co Affil of General Hardware Mfg Co Inc |
NSN 9340-01-273-3976 is a Window,observation, manufactured by Technical Wire Products, Llc Dba Twp, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-01-273-3976 has 1 manufacturer part number on file: 71-91090A (Technical Wire Products, Llc Dba Twp).
Key specifications for 71-91090A: Fourth Corner Radius: 0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; First Corner Radius: 0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Second Corner Radius: 0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Overall Thickness: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN. 13 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.