The Window,observation, cataloged under National Stock Number 9330-01-183-0620, is classified within Federal Supply Class 9330 (Plastics Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Technical Wire Products, Llc Dba Twp. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 9330-01-183-0620 |
| Primary Part Number | 71-90301-B |
| Item Name | Window,observation |
| FSC / FSG | 9330 / 93 — Plastics Fabricated Materials |
| Manufacturer | Technical Wire Products, Llc Dba Twp |
| Status | ACTIVE |
| Overall Thickness | 0.125 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | SQUARE CORNERS |
| Features Provided | FRAME |
| Material | PLASTIC ACRYLIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 71-90301-B PRIMARY | Technical Wire Products, Llc Dba Twp (USA) |
| Reference | Meaning |
|---|---|
| 1083AS229-1 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 9330-01-183-0620 is a Window,observation, manufactured by Technical Wire Products, Llc Dba Twp, classified under FSC 9330, Plastics Fabricated Materials. Status: active.
NSN 9330-01-183-0620 has 1 manufacturer part number on file: 71-90301-B (Technical Wire Products, Llc Dba Twp).
Key specifications for 71-90301-B: Overall Thickness: 0.125 INCHES NOMINAL IN; Material Transparency: CLEAR; Style Designator: SQUARE CORNERS; Overall Length: 3.380 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.