The O-Ring, cataloged under National Stock Number 5331-00-258-7472, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-258-7472 |
| Primary Part Number | A2916DK |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Cross-Sectional Height | 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.346 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 21TD40 | Oshkosh Defense Llc (USA) |
| A2916DK PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
| D38602 | Cnh Industrial America Llc Dba Cnh America (USA) |
| Reference | Meaning |
|---|---|
| 21TD40 | 5/9 Secondary reference Oshkosh Corp |
| 5330002587472 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 5330002587472 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5331-00-258-7472 is a O-Ring, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-258-7472 has 3 manufacturer part numbers on file: 21TD40 (Oshkosh Defense Llc), A2916DK (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), D38602 (Cnh Industrial America Llc Dba Cnh America).
Key specifications for A2916DK: Cross-Sectional Height: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; Center Hole Diameter: 0.346 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 3 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.