The Door Shoring,secondary, cataloged under National Stock Number 1440-01-683-9019, is classified within Federal Supply Class 1440 (Launchers, Guided Missile) of the Guided Missiles group. The manufacturer of record is Ellis Manufacturing Co Inc Dba Ellis Manufacturing Co Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Door Shoring,secondary |
| FSC / FSG | 1440 — Launchers, Guided Missile (FSG 14) |
| Manufacturers | Ellis Manufacturing Co Inc Dba Ellis Manufacturing Co Inc (CAGE 0XMC1) |
| Parameter | Value |
|---|---|
| NSN | 1440-01-683-9019 |
| Primary Part Number | STL-55HD-CP |
| Item Name | Door Shoring,secondary |
| FSC / FSG | 1440 / 14 — Launchers, Guided Missile |
| Manufacturer | Ellis Manufacturing Co Inc Dba Ellis Manufacturing Co Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | H |
| Part Number | Manufacturer |
|---|---|
| STL-55HD | Ellis Manufacturing Co Inc Dba Ellis Manufacturing Co Inc (USA) |
| STL-55HD-CP PRIMARY | Ellis Manufacturing Co Inc Dba Ellis Manufacturing Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 201912977-10 | 5/9 Secondary reference Ellis Manufacturing Co Inc Dba Ellis Manufacturing Co Inc |
| 201912977-10 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 1440-01-683-9019 is a Door Shoring,secondary, manufactured by Ellis Manufacturing Co Inc Dba Ellis Manufacturing Co Inc, classified under FSC 1440, Launchers, Guided Missile. Status: active.
NSN 1440-01-683-9019 has 2 manufacturer part numbers on file: STL-55HD (Ellis Manufacturing Co Inc Dba Ellis Manufacturing Co Inc), STL-55HD-CP (Ellis Manufacturing Co Inc Dba Ellis Manufacturing Co Inc).
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1440-01-683-9019 has DEMIL Code Q. 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.