The Cell Assembly,optical Instrument, cataloged under National Stock Number 1240-00-698-5344, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-00-698-5344 |
| Primary Part Number | 8242545 |
| Item Name | Cell Assembly,optical Instrument |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| FSC Application Data | PERISCOPE,TANK M20 SERIES |
| Optical Element Controlling Agency | FRANKFORD ARSENAL |
| Cell Identifying Number | 7679538 PART NO. |
| Optical Element Quantity | 1 |
| Overall Diameter | 1.680 INCHES MINIMUM AND 1.690 INCHES MAXIMUM IN |
| Eccentric Construction | NOT PROVIDED |
| Optical Element Type | OPTICAL GLASS WINDOW |
| Supplementary Features | CELL SURFACE TREATMENT,ANODIZED,MIL-A-8625,TYPE 2,CLASS 2,BLACK. CHAMFER 0.062 IN. BY 45 DEG OPPOSITE THREAD END. KNURL DRIVE TYPE. OPTICAL ELEMENT BONDED. TWO 0.063 IN. DIA HOLES SPACED 180 DEG APART ON PERIPHERY OF KNURL END. IN |
| Thread Pitch Diameters | +1.5996 TO 1.6047 INCHES IN |
| Material Document and Classification | WW-T-700/3, T3 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.110 INCHES IN |
| Thread Location | EXTERNAL |
| Thread Direction | RIGHT-HAND |
| Optical Element Identifying Number | 7679539 PART NO. |
| Cell Controlling Agency | FRANKFORD ARSENAL |
| Thread Size | 1.625 IN.-32 IN |
| Screw Thread Series Designator | UNS |
| Material | ALUMINUM ALLOY 2024 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8242545 | General Scientific Corp Dba Surgitel (USA) |
| 8242545 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| 8242545 | Seiler Instrument and Manufacturing Company, Incorporated (USA) |
NSN 1240-00-698-5344 is a Cell Assembly,optical Instrument, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-00-698-5344 has 3 manufacturer part numbers on file: 8242545 (General Scientific Corp Dba Surgitel), 8242545 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), 8242545 (Seiler Instrument and Manufacturing Company, Incorporated).
Key specifications for 8242545: FSC Application Data: PERISCOPE,TANK M20 SERIES; Optical Element Controlling Agency: FRANKFORD ARSENAL; Cell Identifying Number: 7679538 PART NO.; Optical Element Quantity: 1. 18 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.
NSN 1240-00-698-5344 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.