The Extension Leg, cataloged under National Stock Number 6605-01-550-3791, is classified within Federal Supply Class 6605 (Navigational Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Firstmark Aerospace Corp. 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 | 6605-01-550-3791 |
| Primary Part Number | 2557345 |
| Item Name | Extension Leg |
| FSC / FSG | 6605 / 66 — Navigational Instruments |
| Manufacturer | Firstmark Aerospace Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2557345 PRIMARY | Firstmark Aerospace Corp (USA) |
NSN 6605-01-550-3791 is a Extension Leg, manufactured by Firstmark Aerospace Corp, classified under FSC 6605, Navigational Instruments. Status: active.
NSN 6605-01-550-3791 has 1 manufacturer part number on file: 2557345 (Firstmark Aerospace Corp).
Key specifications for 2557345: Part Name Assigned by Controlling Agency: (INAVY) EXTENSION LEG; End Item Identification: MONITOR GROUP, MAGNETIC FIELD. 0 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.