The O-Ring, cataloged under National Stock Number 5331-01-537-1945, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Solutions America Inc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-537-1945 |
| Primary Part Number | 46320270F |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Rolls-Royce Solutions America Inc |
| 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 |
|---|---|
| 46320270F | Penn Power Group Llc Div Government Services Department (USA) |
| 46320270F PRIMARY | Rolls-Royce Solutions America Inc (USA) |
| Reference | Meaning |
|---|---|
| 46320530A | 5/9 Secondary reference Penn Power Group Llc Div Government Services Department |
| 46320530A | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
NSN 5331-01-537-1945 is a O-Ring, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-537-1945 has 2 manufacturer part numbers on file: 46320270F (Penn Power Group Llc Div Government Services Department), 46320270F (Rolls-Royce Solutions America Inc).
Key specifications for 46320270F: Special Features: FDS MANUAL,CHAPTER7,PG 7-133,INDEX NO. 9; Part Name Assigned by Controlling Agency: FIGURE 7-101 ENGINE FUEL INJECTOR GROUP O-RING; End Item Identification: DIESEL ENGINE. 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.