The Ring,eyepiece,focusing, cataloged under National Stock Number 1240-01-123-4728, is classified within Federal Supply Class 1240 (No Item Name Available) of the Fire Control Equipment group. The primary manufacturer of record is Unertl John Optical Co Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-123-4728 |
| Primary Part Number | E104 |
| Item Name | Ring,eyepiece,focusing |
| FSC / FSG | 1240 / 12 — No Item Name Available |
| Manufacturer | Unertl John Optical Co Inc |
| Status | ACTIVE |
| General Characteristics Item Description | 0.250 IN. LG; 1.705 IN. ID IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| E104 PRIMARY | Unertl John Optical Co Inc (USA) |
NSN 1240-01-123-4728 is a Ring,eyepiece,focusing, manufactured by Unertl John Optical Co Inc, classified under FSC 1240 (No Item Name Available). Status: active.
NSN 1240-01-123-4728 has 1 cross-referenced part number: E104 (Unertl John Optical Co Inc).
There are 6 known substitutes for 1240-01-123-4728: 4320-00-097-8226, 4730-00-233-1366, 4730-00-233-1368 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for E104: General Characteristics Item Description: 0.250 IN. LG; 1.705 IN. ID IN; End Item Identification: SIGHT,TELESCOPIC,10X. 2 total characteristics are documented in the Federal Logistics Information System.