The Switch Guard Lockwire, cataloged under National Stock Number 5342-01-040-1104, is classified within Federal Supply Class 5342 (Hardware, Weapon System) of the Hardware and Abrasives group. The manufacturer of record is Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5342-01-040-1104 |
| Primary Part Number | 51571-1 |
| Item Name | Switch Guard Lockwire |
| FSC / FSG | 5342 / 53 — Hardware, Weapon System |
| Manufacturer | Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CRES COMP 301 THROUGH 304,BLACK OXIDE MIL-C-13924,0.790 IN. NOMINAL LG,0.300 IN. MAX WIDTH IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 51571-1 PRIMARY | Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc (USA) |
| Reference | Meaning |
|---|---|
| 50527 | 5/9 Secondary reference Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc |
NSN 5342-01-040-1104 is a Switch Guard Lockwire, manufactured by Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc, classified under FSC 5342, Hardware, Weapon System. Status: active.
NSN 5342-01-040-1104 has 1 manufacturer part number on file: 51571-1 (Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-128-8224, 5995-01-515-9504. Verify interchangeability with system specifications before substitution.
Key specifications for 51571-1: General Characteristics Item Description: CRES COMP 301 THROUGH 304,BLACK OXIDE MIL-C-13924,0.790 IN. NOMINAL LG,0.300 IN. MAX WIDTH IN. 1 specification is 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.
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.