The O-Ring, cataloged under National Stock Number 5331-01-657-8444, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Palmer Johnson Power Systems Llc Dba Palmer Johnson Distributors. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-657-8444 |
| Primary Part Number | ZF0634304309 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Palmer Johnson Power Systems Llc Dba Palmer Johnson Distributors |
| 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 |
| Part Number | Manufacturer |
|---|---|
| ZF0634304309 PRIMARY | Palmer Johnson Power Systems Llc Dba Palmer Johnson Distributors (USA) |
| Reference | Meaning |
|---|---|
| 0634.306.524 | 3/9 Design control — primary reference Palmer Johnson Power Systems Llc Dba Palmer Johnson Distributors |
| ZF 0634-304-309 | 6/9 Informative reference only Royal Malaysian Navy |
NSN 5331-01-657-8444 is a O-Ring, manufactured by Palmer Johnson Power Systems Llc Dba Palmer Johnson Distributors, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-657-8444 has 1 manufacturer part number on file: ZF0634304309 (Palmer Johnson Power Systems Llc Dba Palmer Johnson Distributors).
Key specifications for ZF0634304309: Special Features: OEM CAGE CODE:43PF5 DOES NOT SELL TO THE GOVERNMENT; Part Name Assigned by Controlling Agency: O-RING; End Item Identification: NSN:3930-01-522-7364. 0 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.