The Retainer,safety, cataloged under National Stock Number 5120-01-595-0576, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-595-0576 |
| Primary Part Number | 4C-9839 |
| Item Name | Retainer,safety |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL STRAP TYPE; 1/8 IN. THICK X 1-3/4 IN. WIDE X 11.4 IN. LENGTH; FOR PULLING ROD IN CASE PULLING ROD ACCIDENTALLY BREAKS 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 |
|---|---|
| 4C-9839 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5120-01-595-0576 is a Retainer,safety, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-595-0576 has 1 manufacturer part number on file: 4C-9839 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4C-9839: General Characteristics Item Description: STEEL STRAP TYPE; 1/8 IN. THICK X 1-3/4 IN. WIDE X 11.4 IN. LENGTH; FOR PULLING ROD IN CASE PULLING ROD ACCIDENTALLY BREAKS IN; End Item Identification: CATERPILLAR 3600 SERIES ENGINES. 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.