The O-Ring, cataloged under National Stock Number 5331-01-049-4259, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Bosch Security Systems, Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Bosch Security Systems, Llc (CAGE 25734) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-049-4259 |
| Primary Part Number | 43893 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Bosch Security Systems, Llc |
| 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 |
|---|---|
| 43893 PRIMARY | Bosch Security Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 43893-P1 | 5/9 Secondary reference Bosch Security Systems, Llc |
| 43893 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
NSN 5331-01-049-4259 is a O-Ring, manufactured by Bosch Security Systems, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-049-4259 has 1 manufacturer part number on file: 43893 (Bosch Security Systems, Llc).
6 possible matches (shared part number, not a government interchangeability claim): 2590-01-168-1934, 6680-01-198-4450, 5915-01-223-3639. Verify interchangeability with system specifications before substitution.
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.