The Window,observation, cataloged under National Stock Number 9340-00-264-5429, is classified within Federal Supply Class 9340 (Glass Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Sterling Precisions Optics Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9340-00-264-5429 |
| Primary Part Number | SM-B-148515 |
| Item Name | Window,observation |
| FSC / FSG | 9340 / 93 — Glass Fabricated Materials |
| Manufacturer | Sterling Precisions Optics Inc |
| Status | ACTIVE |
| Surface Finish | POLISHED |
| Overall Thickness | 0.125 INCHES NOMINAL IN |
| Material Transparency | CLEAR |
| Style Designator | SQUARE CORNERS |
| Edge Type | BEVELED |
| Material | GLASS |
| 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 |
|---|---|
| SM-B-148515 | Sterling Precisions Optics Inc (USA) |
| SM-B-148515 | Quadriel Inc (USA) |
| SM-B-148515 | Spencer Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 52896 | 5/9 Secondary reference U.S. Government activity |
| SM-B-148515 | 5/9 Secondary reference Valcore Manufacturing Llc Dba Use CAGE Code 04ye2 for Cataloging |
| SM-B-148515 | 3/2 Design control — primary reference U.S. Government activity |
| SM-B-148515 | 5/9 Secondary reference Valcore Manufacturing Llc |
NSN 9340-00-264-5429 is a Window,observation, manufactured by Sterling Precisions Optics Inc, classified under FSC 9340, Glass Fabricated Materials. Status: active.
NSN 9340-00-264-5429 has 3 manufacturer part numbers on file: SM-B-148515 (Sterling Precisions Optics Inc), SM-B-148515 (Quadriel Inc), SM-B-148515 (Spencer Industries Inc).
3 possible matches (shared part number, not a government interchangeability claim): 5340-00-288-6029, 5340-01-150-1552, 6210-01-315-0780. Verify interchangeability with system specifications before substitution.
Key specifications for SM-B-148515: Surface Finish: POLISHED; Overall Thickness: 0.125 INCHES NOMINAL IN; Material Transparency: CLEAR; Style Designator: SQUARE CORNERS. 6 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.