The Window,observation, cataloged under National Stock Number 9330-01-243-4157, is classified within Federal Supply Class 9330 (Plastics Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9330-01-243-4157 |
| Primary Part Number | 5115-01 |
| Item Name | Window,observation |
| FSC / FSG | 9330 / 93 — Plastics Fabricated Materials |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Overall Diameter | 1.629 INCHES MINIMUM AND 1.634 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 5115-01 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 5115B | 5/9 Secondary reference Howell Laboratories Inc Dba Howell Laboratories Inc |
NSN 9330-01-243-4157 is a Window,observation, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 9330, Plastics Fabricated Materials. Status: active.
NSN 9330-01-243-4157 has 1 manufacturer part number on file: 5115-01 (Howell Laboratories Inc Dba Howell Laboratories Inc).
1 possible match (shared part number, not a government interchangeability claim): 6640-01-663-5771. Verify interchangeability with system specifications before substitution.
Key specifications for 5115-01: Overall Diameter: 1.629 INCHES MINIMUM AND 1.634 INCHES MAXIMUM IN; Overall Length: 0.873 INCHES MINIMUM AND 0.874 INCHES MAXIMUM IN; Special Features: TRANSPARENT; Material: PLASTIC ACRYLIC. 2 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.