The Scale,diopter, cataloged under National Stock Number 1240-00-698-1666, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-00-698-1666 |
| Primary Part Number | 230423PC1 |
| Item Name | Scale,diopter |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Overall Outside Diameter | 1.390 INCHES MINIMUM AND 1.410 INCHES MAXIMUM IN |
| Inscription Color | BLACK |
| Scale Division Quantity | 1 |
| Inside Diameter | 0.594 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Mounting Configuration | TWO 0.138 IN.-40 NF THREADED SETSCREW HOLES IN |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 230423PC1 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 1240-00-698-1666 is a Scale,diopter, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-00-698-1666 has 1 manufacturer part number on file: 230423PC1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 230423PC1: Overall Height: 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM IN; Overall Outside Diameter: 1.390 INCHES MINIMUM AND 1.410 INCHES MAXIMUM IN; Inscription Color: BLACK; Scale Division Quantity: 1. 7 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 1240-00-698-1666 has DEMIL Code B. 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.