The O-Ring, cataloged under National Stock Number 5331-01-284-7873, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Tld Wollard 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Tld Wollard Llc (CAGE 44185) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-284-7873 |
| Primary Part Number | M20/900402 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Tld Wollard Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| M20/900402 PRIMARY | Tld Wollard Llc (USA) |
| Reference | Meaning |
|---|---|
| 20/900402 | 5/9 Secondary reference Tld Wollard Llc |
| 20/900402 | 5/9 Secondary reference Lannex Ltd |
NSN 5331-01-284-7873 is a O-Ring, manufactured by Tld Wollard Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-284-7873 has 1 manufacturer part number on file: M20/900402 (Tld Wollard Llc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-348-7049. 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.