The Hold Down,pump, cataloged under National Stock Number 4320-01-478-6463, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-478-6463 |
| Primary Part Number | 855001B0030 |
| Item Name | Hold Down,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
| Status | ACTIVE |
| General Characteristics Item Description | HOLD DOWN ASSEMBLY FOR WATER PUMP |
| Accessory Components and Quantity | U-BOLT 1.75 INNER SPAN, 1/4-20 THREADS (1); WASHER PLATE 3.25 X .75 X .19 THK (1); SELF LOCKING HEX NUT, 1/4-20 UNC 2B (2) |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 855001B0030 PRIMARY | Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service (USA) |
NSN 4320-01-478-6463 is a Hold Down,pump, manufactured by Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-478-6463 has 1 manufacturer part number on file: 855001B0030 (Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service).
Key specifications for 855001B0030: General Characteristics Item Description: HOLD DOWN ASSEMBLY FOR WATER PUMP; Accessory Components and Quantity: U-BOLT 1.75 INNER SPAN, 1/4-20 THREADS (1); WASHER PLATE 3.25 X .75 X .19 THK (1); SELF LOCKING HEX NUT, 1/4-20 UNC 2B (2); Special Features: MATERIAL AS PER ASTM A36 CARBON STEEL; ZINC PLATE AS PER QQ-Z-325; End Item Identification: GOES ON WATER PUMP MODULE, NSN 4320-01-318-1853. 3 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.