The Lock,finger, cataloged under National Stock Number 4520-00-596-3967, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Lock,finger |
| FSC / FSG | 4520 — Space and Water Heating Equipment (FSG 45) |
| Parameter | Value |
|---|---|
| NSN | 4520-00-596-3967 |
| Item Name | Lock,finger |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 106840EPC18 | 5/9 Secondary reference Babcock & Wilcox Co |
| 51443B | 5/9 Secondary reference Babcock & Wilcox Co |
| 7800174 | 3/9 Design control — primary reference The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| TCW1039-001851443BMK-18 | 5/9 Secondary reference The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| 306307E REV.1 PIECE 18 | C/1 Advisory reference — outside the item-of-supply concept The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| 7800174 | C/1 Advisory reference — outside the item-of-supply concept Babcock & Wilcox Co |
NSN 4520-00-596-3967 is a Lock,finger, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
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.