The O-Ring, cataloged under National Stock Number 5331-01-429-2590, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Insinger Machine Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-429-2590 |
| Primary Part Number | D2-563 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Insinger Machine Co |
| 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 |
|---|---|
| D2-563 PRIMARY | Insinger Machine Co (USA) |
| Reference | Meaning |
|---|---|
| SK-2839 IT-6 | 5/9 Secondary reference Insinger Machine Co |
NSN 5331-01-429-2590 is a O-Ring, manufactured by Insinger Machine Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-429-2590 has 1 manufacturer part number on file: D2-563 (Insinger Machine Co).
Key specifications for D2-563: Part Name Assigned by Controlling Agency: O-RING BUNA-N 70 DURO. 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.