The Eyepiece Box, cataloged under National Stock Number 2040-01-289-7924, is classified within Federal Supply Class 2040 (No Item Name Available) of the Ship and Marine Equipment group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2040-01-289-7924 |
| Primary Part Number | 56570L1 |
| Item Name | Eyepiece Box |
| FSC / FSG | 2040 / 20 — No Item Name Available |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 56570L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 56570 | L3 Technologies, Inc. Div L3 Keo (USA) |
| 933F056570 | L3 Technologies, Inc. Div L3 Keo (USA) |
| 933F056570 | Northrop Grumman Systems Corporation (USA) |
NSN 2040-01-289-7924 is a Eyepiece Box, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 2040 (No Item Name Available). Status: active.
NSN 2040-01-289-7924 has 4 cross-referenced part numbers: 56570L1 (Naval Inventory Control Point Mechanicsburg), 56570 (L3 Technologies, Inc. Div L3 Keo), 933F056570 (L3 Technologies, Inc. Div L3 Keo), 933F056570 (Northrop Grumman Systems Corporation).
There are 2 known substitutes for 2040-01-289-7924: 9540-00-556-8913, 6680-01-036-1203. Verify interchangeability with system specifications before substitution.
Key specifications for 56570L1: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS. 2 total characteristics are documented in the Federal Logistics Information System.