The O-Ring, cataloged under National Stock Number 5331-01-606-3944, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Tri Tool Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-606-3944 |
| Primary Part Number | 28-0256 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Tri Tool Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 28-0256 PRIMARY | Tri Tool Inc (USA) |
NSN 5331-01-606-3944 is a O-Ring, manufactured by Tri Tool Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-606-3944 has 1 manufacturer part number on file: 28-0256 (Tri Tool Inc).
Key specifications for 28-0256: Part Name Assigned by Controlling Agency: O-RING; End Item Identification: V-22 SE. 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.
NSN 5331-01-606-3944 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.