The O-Ring, cataloged under National Stock Number 5331-01-529-3105, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Ds, Inc. Dba Curtiss-Wright C5isr Mission Solutions. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-529-3105 |
| Primary Part Number | PNL-027A-01 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Curtiss-Wright Ds, Inc. Dba Curtiss-Wright C5isr Mission Solutions |
| Status | ACTIVE |
| Material | RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM |
| 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 |
|---|---|
| 9464K74 | Mcmaster-Carr Supply Co (USA) |
| PNL-027A-01 PRIMARY | Curtiss-Wright Ds, Inc. Dba Curtiss-Wright C5isr Mission Solutions (USA) |
| Reference | Meaning |
|---|---|
| PNL-0279A-01 | 5/9 Secondary reference U.S. Government activity |
| PNL-0279-01 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-529-3105 is a O-Ring, manufactured by Curtiss-Wright Ds, Inc. Dba Curtiss-Wright C5isr Mission Solutions, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-529-3105 has 2 manufacturer part numbers on file: 9464K74 (Mcmaster-Carr Supply Co), PNL-027A-01 (Curtiss-Wright Ds, Inc. Dba Curtiss-Wright C5isr Mission Solutions).
Key specifications for PNL-027A-01: Special Features: IDENTIFIED AS DASH NO. 20 O-RING USED ON BAE REAR END CAP BOM; End Item Identification: F-16 AIRCRAFT; Material: RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM. 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.