The Safety Switch, cataloged under National Stock Number 1005-01-685-2491, is classified within Federal Supply Class 1005 (Guns, Through 30mm) of the Weapons group. The manufacturer of record is Bae Systems Land & Armaments L.p.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1005-01-685-2491 |
| Primary Part Number | TYUW70000A |
| Item Name | Safety Switch |
| FSC / FSG | 1005 / 10 — Guns, Through 30mm |
| Manufacturer | Bae Systems Land & Armaments L.p. |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | BAE IS OEM OF A PART THAT IS BEING MODIFIED BY NAVSEA PICATINNY AND NAVSEA PICATINNY OWNS DESIGN RIGHTS FOR MODIFIED NEW PART |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8566416-1 | Naval Sea Systems Command (USA) |
| TYUW70000A | Bae Systems Land & Armaments L.p. (USA) |
| Reference | Meaning |
|---|---|
| 8566416/SHEET 1 DASH NO. -1 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 1005-01-685-2491 is a Safety Switch, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 1005, Guns, Through 30mm. Status: active.
NSN 1005-01-685-2491 has 2 manufacturer part numbers on file: 8566416-1 (Naval Sea Systems Command), TYUW70000A (Bae Systems Land & Armaments L.p.).
1 possible match (shared part number, not a government interchangeability claim): 1005-01-685-2519. Verify interchangeability with system specifications before substitution.
Key specifications for TYUW70000A: Part Name Assigned by Controlling Agency: SAFETY MANUAL SWITCH; End Item Identification: MK88 MOD2 GUN MOUNT ASSY; Reference Number Differentiating Characteristics: BAE IS OEM OF A PART THAT IS BEING MODIFIED BY NAVSEA PICATINNY AND NAVSEA PICATINNY OWNS DESIGN RIGHTS FOR MODIFIED NEW PART. 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.
NSN 1005-01-685-2491 has DEMIL Code D. 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.