The Locking Device,hand, cataloged under National Stock Number 4420-01-033-6891, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Mil-Base Industries, Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Locking Device,hand |
| FSC / FSG | 4420 — Heat Exchangers and Steam Condensers (FSG 44) |
| Manufacturers | Mil-Base Industries, Inc. (CAGE 3X694); M I S C, Inc (CAGE 1CN60) |
| Parameter | Value |
|---|---|
| NSN | 4420-01-033-6891 |
| Primary Part Number | 6374D12-1PC59 |
| Item Name | Locking Device,hand |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Mil-Base Industries, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 6374D12-1PC59 | Mil-Base Industries, Inc. (USA) |
| 6374-D-19-1-PC59 | M I S C, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6374-D-19-1 PC59 | 3/9 Design control — primary reference Tec Design & Manufacturing, Inc. |
| MS18288-16 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 6374D12-1PC59 | 5/9 Secondary reference U.S. Government activity |
NSN 4420-01-033-6891 is a Locking Device,hand, manufactured by Mil-Base Industries, Inc., classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-033-6891 has 2 manufacturer part numbers on file: 6374D12-1PC59 (Mil-Base Industries, Inc.), 6374-D-19-1-PC59 (M I S C, Inc).
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.