The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-274-0820, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-274-0820 |
| Primary Part Number | 262-4378 |
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| General Characteristics Item Description | CONTAINS 1 EA 6N9312 PACKING 5330-01-097-8142; SEAL 8S7762 1 EA 5365-00432-8183; AND 1 EA 8S8821 PACKING 5330-00-431-7137 |
| 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 |
|---|---|
| 262-4378 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 7W6999 | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 1010700 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
| 106-7150 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
| 1189163 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
NSN 4320-01-274-0820 is a Seal Assembly,shaft,spring Loade, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-274-0820 has 2 manufacturer part numbers on file: 262-4378 (Caterpillar Inc Div Caterpillar Defense), 7W6999 (Caterpillar Inc Div Caterpillar Defense).
1 possible match (shared part number, not a government interchangeability claim): 3510-01-394-0151. Verify interchangeability with system specifications before substitution.
Key specifications for 262-4378: General Characteristics Item Description: CONTAINS 1 EA 6N9312 PACKING 5330-01-097-8142; SEAL 8S7762 1 EA 5365-00432-8183; AND 1 EA 8S8821 PACKING 5330-00-431-7137; End Item Identification: FRESH WATER PUMP CATERPILLAR MODEL D304BT DIESEL ENGINE ABOARD 110 FT WPB CLASS COAST GUARD VESSELS; LOGISTICS SUPPORT VESSEL (LSV) FT. 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.