The Plunger,hydraulic Ram, cataloged under National Stock Number 4320-01-418-7058, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 5 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-418-7058 |
| Primary Part Number | 123HM40052-1 |
| Item Name | Plunger,hydraulic Ram |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Overall Diameter | 2.302 INCHES NOMINAL IN |
| General Characteristics Item Description | MATERIAL PER QQ-S-763, CL440C; HEAT TREATMENT PER ROCKWELL C58 TO C64 |
| Criticality Code Justification | FEAT |
| Surface Treatment | PASSIVATE |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 123HM40052-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123HM40052 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| 123HM40052-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 123HM40052-1 | 5/9 Secondary reference Wiebel Aerospace (1995) Inc |
NSN 4320-01-418-7058 is a Plunger,hydraulic Ram, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-418-7058 has 1 manufacturer part number on file: 123HM40052-1 (Northrop Grumman Systems Corporation).
Key specifications for 123HM40052-1: Overall Diameter: 2.302 INCHES NOMINAL IN; General Characteristics Item Description: MATERIAL PER QQ-S-763, CL440C; HEAT TREATMENT PER ROCKWELL C58 TO C64; Criticality Code Justification: FEAT; Overall Length: 2.130 INCHES NOMINAL IN. 5 specifications are 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.